Musculoskeletal Injections Performed by Family Medicine Residents Participating in a Clinical Sports Medicine Track.

BACKGROUND AND OBJECTIVES: Primary care physicians (PCPs) are front line providers of musculoskeletal (MSK) care and MSK injections. Little is known about the volume of common MSK injections performed by FM residents (FMRs) and those residents participating in a longitudinal clinical sports medicine (SM) track. This study outlines an SM track and demonstrates the MSK procedural experience of SM track residents (SMRs) and traditional FMRs (non-SMRs). METHODS: We utilized a retrospective study design. We compared billing codes and provider information for common MSK injections for the second (PGY-2) and third (PGY-3) postgraduate years for non-SMRs (n=39) and SMRs (n=7) graduating between 2018-2021. We used the average number of patient encounters for each comparison group (non-SMRs vs SMRs) to determine the percentage of patients receiving an MSK injection in each cohort by PGY status. RESULTS: Of patients receiving MSK injections across both groups, the most common was the landmark-guided large joint injection (64.23%), and the most frequent site was the knee (47.00%). SMRs performed significantly more MSK injections per patient evaluated compared to non-SMRs while in the SM clinic (PGY-2: 2.706% vs 0.913%, P<.001; PGY-3: 4.276% vs 0.862%, P<.001). No significant differences existed between PGY-2 groups when the influence of the SM clinic was removed, but PGY-3 SMRs performed significantly more injections than PGY-3 non-SMRs (1.225% vs 0.862%, P<.011). CONCLUSIONS: An SM track in the FM residency is associated with an increased volume of MSK injections among SMRs compared to their graduate year-matched non-SMRs.

Value of one additional injection at the root of the limb in the lymphoscintigraphic evaluation and management of primary and secondary lower-limb lymphedemas.

INTRODUCTION: The classical lymphoscintigraphic investigations of lower-limb lymphatic edema [LLLE] sometimes reveal either no or few lymph nodes [LNs] at the root of the limb[s] and/or in the abdomen. The aim of the present paper is to report the results of performing one additional injection at the root of the edematous limb[s] to force the visualization of the LNs and/or to demonstrate the collateral lymphatic pathways in such patients. METHODS AND FINDINGS: We retrospectively reviewed our database and found 99 patients [44 primary LLLE with 47 limbs injected and 55 with LLLE secondary to treatments for cancer with 64 limbs injected] where such an additional injection had been performed. In the 43 LLLE patients where no LNs were seen at the end of the classical exam [15 primary LLLE and 28 secondary LLLE], the extra injection showed lymphatic drainage toward LN[s] in all except 3 and when at least one LN was seen, the injection showed lymphatic drainage in every case toward the same ipsilateral [inguinal and/or iliac] LNs [as shown by the classical injection] and/or toward additional LNs. In 40.7% of patients, we observed one or more additional lymphatic pathways: prepubic superficial lymphatic vessels [LV] crossing the midline anteriorly toward contralateral inguinal LNs in 21 [18.9%], "posterior" LV [toward contralateral inguinal LNs and/or ipsi- or contralateral lumbo-aortic and/or para-renal LNs] in 14 [12.6%], but deep LV toward the ipsilateral common iliac LNs passing between the gluteal muscles in 32 [28.8%]. CONCLUSION: Our work pinpoints one limitation of classical bipedal radionuclide lymphangiography. In patients with primary and secondary LLLE where inguinal and/or iliac LNs cannot be seen on bipedal radionuclide lymphangiography, this additional injection reveals the true lympho-nodal status and shows unexpected collateral lymphatic pathways in 40% of cases. Such information is of the utmost importance in LLLE management and its acquisition is consequently recommended in these patients.

Anatomical Injection Guidelines for Glabellar Frown Lines Based on Ultrasonographic Evaluation.

When botulinum neurotoxin (BoNT) is injected to treat glabellar frown lines, the corrugator supercilia muscle (CSM) and procerus muscles are the main targets. Although there have been many studies on the treatment of glabellar frown lines, no study has confirmed the dynamic movement under ultrasonography (US). This study examined and evaluated dynamic muscle movements under US, thereby providing more effective BoNT injection guidelines for glabellar frowning. Glabellar frowning was categorized as either Type A or B. Type A is the general frowning pattern in which vertical wrinkles are made by contracting the CSM and procerus muscles (81%, n = 13). On US images, the procerus muscle thickens and the bilateral CSMs contract. Type B is an upward frowning pattern demonstrating upward elevation of vertical wrinkles due to hyperactive contraction of the frontalis muscle during frowning (19%, n = 3). On US images, the hypoechoic frontalis muscle thickens, forming horizontal forehead lines. After BoNT injection into the CSM and frontalis muscle but not the procerus muscle, Type B patterns showed improvements in the vertical crease and horizontal forehead line. Both types showed improvement in glabellar frown lines after conventional injection, but the horizontal forehead line did not improve in Type B. Type B wrinkles improved after additional injections into the frontalis muscle. This study provided novel anatomical findings related to the injection of glabellar frown lines with BoNT. Preliminary analysis and optimized procedures using US will enable more effective and safer injections.

Mathematical modeling and computer simulation of needle insertion into soft tissue.

In this study we present a kinematic approach for modeling needle insertion into soft tissues. The kinematic approach allows the presentation of the problem as Dirichlet-type (i.e. driven by enforced motion of boundaries) and therefore weakly sensitive to unknown properties of the tissues and needle-tissue interaction. The parameters used in the kinematic approach are straightforward to determine from images. Our method uses Meshless Total Lagrangian Explicit Dynamics (MTLED) method to compute soft tissue deformations. The proposed scheme was validated against experiments of needle insertion into silicone gel samples. We also present a simulation of needle insertion into the brain demonstrating the method's insensitivity to assumed mechanical properties of tissue.

Dupuytren Disease Management Trends: A Survey of Hand Surgeons.

Background: Management of Dupuytren Disease is variable, and influenced by multiple factors including location, extent of disease, surgical preference and familiarity with different treatment techniques. The objective of this study was to determine current Dupuytren Disease management trends in Australia. Methods: A questionnaire was sent through The Australian Hand Surgery Society to all members. In addition to demographic data, indications and preferences for different management interventions were surveyed on location of disease, age and activity level of the patient. Results: 99 (48%) of the Australian Hand Surgery Society members completed the survey. Respondents were primarily Orthopaedic (50%) or Plastic (49%) Surgeons, and most worked in private (99%) and public (71%) practice. Surgeon's believed that Tubiana's treatment goals to correct deformity was the most important (60%) and to shorten post-operative recovery (60%) was the least important. Only 42% of respondents perform needle aponeurotomy for Dupuytren Disease. In contrast 70% of respondents perform collagenase injections, with manipulation most commonly undertaken on the second day (46%) and skin tears (52%) the most common complication. Seventy-five percent of the respondents feel there is sufficient evidence to support the treatment of Dupuytren disease with collagenase injections. Ninety nine percent of all respondents perform fasciectomes for Dupuytren Disease, with Limited (without graft) (76%) the most routine performed. Conclusions: Several procedural options for the treatment of Dupuytren Disease exist within Australia. This study shows current Australian practice trends and highlights the increasing use of collagenase.

Efficacy of a single injection compared with triple injections using a costoclavicular approach for infraclavicular brachial plexus block during forearm and hand surgery: A randomized controlled trial.

OBJECTIVES: It was recently proposed that a costoclavicular (CC) approach can be used in ultrasound (US)-guided infraclavicular brachial plexus block (BPB). In this study, we hypothesized that triple injections in each of the 3 cords in the CC space would result in a greater spread in the 4 major terminal nerves of the brachial plexus than a single injection in the CC space without increasing the local anesthetic (LA) volume. METHODS: Sixty-eight patients who underwent upper extremity surgery randomly received either a single injection (SI group, n = 34) or a triple injection (TI group, n = 34) using the CC approach. Ten milliliters of 2% lidocaine, 10 mL of 0.75% ropivacaine, and 5 mL of normal saline were used for BPB in each group (total 25 mL). Sensory-motor blockade of the ipsilateral median, radial, ulnar, and musculocutaneous nerves was assessed by a blinded observer at 5 minutes intervals for 30 minutes immediately after LA administration. RESULTS: Thirty minutes after the block, the blockage rate of all 4 nerves was significantly higher in the TI group than in the SI group (52.9% in the SI group vs 85.3% in the TI group, P = .004). But there was no significant difference in the anesthesia grade between the 2 groups (P = .262). The performance time was similar in the 2 groups (3.0 ±â€Š0.9 minutes in the SI group vs 3.2 ±â€Š1.2 minutes in the TI group, respectively; P = .54). DISCUSSION: The TI of CC approach increased the consistency of US-guided infraclavicular BPB in terms of the rate of blocking all 4 nerves without increasing the procedure time despite administering the same volume of the LA.

Invasive group A streptococcal infections in North West England: epidemiology, risk factors and fatal infection.

OBJECTIVES: In England, notifications of invasive group A streptococcal (iGAS) infections have increased since 2015. We describe time trends, risk factors, as well as clinical and infection characteristics amongst iGAS cases in North West England, focussing on people who inject drugs (PWIDs), prisoners and homeless populations (referred to as risk groups), and analyse factors for fatal infection. STUDY DESIGN: The study design used was a cross-sectional study. METHODS: Data for all iGAS cases notified to Public Health England North West between January 2016 and May 2019 were used. Analysis consisted of time trend analysis, descriptive statistics, hypothesis testing to investigate differences in clinical and infection characteristics between risk and non-risk groups and binary logistic regression to identify factors associated with fatal infection. RESULTS: There were 1353 cases. Two hundred and two were amongst risk groups, who were predominantly PWIDs in Greater Manchester. Soft tissue risk factors were widespread. There were differences in strain-type between risk and non-risk groups. Female gender, cancer, emm1.0 and emm5.23 were associated with increased odds of death, whilst cellulitis was associated with reduced odds. The relationship between age and death was U-shaped. CONCLUSIONS: iGAS has increased in North West England since 2016, including amongst PWIDs. This may be due to emm-type replacement, barriers to good hygiene and increasing colonisation.

Warming the postpartum body as a form of postnatal care: An ethnographic study of medical injections and traditional health practices in Cambodia.

Postpartum care is a critical element for ensuring survival and health of mothers and newborns but is often inadequate in low- and middle-income countries due to barriers to access and resource constraints. Newly delivered mothers and their families often rely on traditional forms of postnatal care rooted in social and cultural customs or may blend modern and traditional forms of care. This ethnographic study sought to explore use of biomedical and traditional forms of postnatal care. Data were collected through unstructured observation and in-depth interviews with 15 mothers. Participants reported embracing traditional understandings of health and illness in the post-partum period centered on heating the body through diet, steaming, and other applications of heat, yet also seeking injections from private health care providers. Thematic analysis explored concepts related to transitioning forms of postnatal care, valuing of care through different lenses, and diverse sources of advice on postnatal care. Mothers also described concurrent use of both traditional medicine and biomedical postnatal care, and the importance of adhering to cultural traditions of postnatal care for future health. Maternal and newborn health are closely associated with postnatal care, so ensuring culturally appropriate and high-quality care must be an important priority for stakeholders including understand health practices that are evolving to include injections.

Experiences With Counterfeit Aesthetic Medical Devices and Injectables: A National Survey.

BACKGROUND: Counterfeit medical devices and injectables have recently garnered interest in the field of aesthetics. Unlike their original counterparts, these counterfeit products have neither been tested nor verified using certified quality control measures. OBJECTIVE: Our study investigated the pervasiveness of counterfeit products in the field as well as the experiences and attitudes of practitioners. MATERIALS AND METHODS: An online survey was distributed to current members of the American Society for Dermatologic Surgery (ASDS) and the American Society for Laser Medicine and Surgery (ASLMS). RESULTS: For medical devices, 37.4% have encountered counterfeits and 20.1% have experienced patients with adverse events from them. For injectables, 41.1% have encountered counterfeits and 39.7% have experienced patients with adverse events from them. Compared with their original, most respondents believe that counterfeits are worse in terms of reliability, safety, and effectiveness. The majority also believe that counterfeits are either very or extremely endangering to patient safety. CONCLUSION: Counterfeit medical devices and injectables are not uncommonly encountered. Overall, practitioners believe counterfeits are endangering patient safety and result in adverse events and think that either stricter rules and regulations or better enforcement of existing regulations is necessary.

Compliance with needle-use declarations at two Olympic Winter Games: Sochi (2014) and PyeongChang (2018).

OBJECTIVES: We describe compliance with the 'IOC Needle Policy' at two Winter Olympic Games (Sochi and PyeongChang) and compare these findings to those of the Summer Olympic Games of Rio de Janeiro. METHOD: All needle-use declaration(s) (NUD) received during the course of the 2014 and 2018 Olympic Games were reviewed. We recorded socio-demographic data, the nature and purpose of needle use, product(s) injected, and route of administration. Data were analysed descriptively. RESULTS: In total, doctors from 22 National Olympic Committees (NOCs) submitted 122 NUD involving 82 athletes in Sochi; in PyeongChang, doctors from 19 NOCs submitted 82 NUD involving 61 athletes. This represented approximately 2% of all athletes at both Games, and 25% and 20% of all NOCs participating in Sochi and PyeongChang, respectively. No marked differences in the NUD distribution patterns were apparent when comparing the two Winter Olympic Games. The most commonly administered substances were as follows: local anaesthetics, non-steroidal anti-inflammatory drug and glucocorticoids. Physicians submitted multiple NUD for 24% of all athletes who required a NUD. CONCLUSION: A limited number of NOCs submitted NUD suggesting a low incidence of needle use or limited compliance (approximately 2%). A key challenge for the future is to increase the rate of compliance in submitting NUD. More effective education of NOCs, team physicians and athletes regarding the NUD policy, its purpose, and the necessity for NUD submissions, in association with the enforcement of the appropriate sanctions following non-compliance are needed.

Medical injection and access to sterile injection equipment in low- and middle-income countries: a meta-analysis of Demographic and Health Surveys (2010-2017).

BACKGROUND: Unsafe injection practices contribute to increased risks of blood-borne infections, including human immunodeficiency virus, hepatitis B and hepatitis C viruses. The aim of this study was to estimate the prevalence of medical injections as well as assess the level of access to sterile injection equipment by demographic factors in low- and middle-income countries (LMICs). METHODS: We carried out a meta-analysis of nationally representative Demographic and Health Surveys (DHSs) conducted between 2010 and 2017 in 39 LMICs. Random effects meta-analysis was used in estimating pooled and disaggregated prevalence. All analyses were conducted using Stata version 14 and Microsoft Excel 2016. RESULTS: The pooled 12-month prevalence estimate of medical injection was 32.4% (95% confidence interval 29.3-35.6). Pakistan, Rwanda and Myanmar had the highest prevalence of medical injection: 59.1%, 56.4% and 53.0%, respectively. Regionally, the prevalence of medical injection ranged from 13.5% in west Asia to 42.7% in south and southeast Asia. The pooled prevalence of access to sterile injection equipment was 96.5%, with Pakistan, Comoros and Afghanistan having comparatively less prevalence: 86.0%, 90.3% and 90.9%, respectively. CONCLUSIONS: Overuse of medical injection and potentially unsafe injection practices remain a considerable challenge in LMICs. To stem the tides of these challenges, national governments of LMICs need to initiate appropriate interventions, including education of stakeholders, and equity in access to quality healthcare services.

Perceptions of Psychiatrists Toward the Use of Long-Acting Injectable Antipsychotics: An Online Survey Study From India.

PURPOSE/BACKGROUND: Despite proven benefits of long-acting injectables (LAIs), these are frequently underused by the psychiatrists. Accordingly, this study aimed to explore the perceptions of psychiatrists toward the use of LAI antipsychotics in their routine clinical practice. METHODS/PROCEDURE: An online e-mail survey was conducted by using Survey Monkey platform. RESULTS: A total of 622 psychiatrists with a mean age of 41 years who were in psychiatric practice for approximately 14 years participated in the survey. Participants reported using LAI, mainly for patients with schizophrenia, with LAI prescribed to approximately one-tenth (9.30%) of their patients in acute phase of illness and in one-fifth (18.42%) of patients in stabilization/stable phase. Fluphenazine decanoate (32.7%) was the most commonly used LAI followed by flupenthixol decanoate (19.5%), haloperidol decanoate (17.8%), and olanzapine pamoate (11.1%). The most common reasons for starting LAI were history of medication (100%) and treatment (80.5%) nonadherence, followed by having frequent relapses/exacerbations of symptoms (54.8%). Overall, more than half of the participants felt the level of acceptance of LAI among patients offered to be quite reasonable (54.3%), and mostly, LAIs were used as combination therapy with oral antipsychotics (73.6%). Despite all these, approximately three-fifths (59%) of the participants reported that they underuse LAI to a certain extent, with most common reasons that deter them from using LAI being the cost (55.45%), lack of interest of patients in receiving LAI (42.9%), lack of regular availability (41.3%), and patients being scared of receiving injectables (41.2%). CONCLUSIONS/IMPLICATIONS: The LAI antipsychotics despite having several benefits are still underused by a substantial proportion of practicing psychiatrists.

HIV drug resistance in persons who inject drugs enrolled in an HIV prevention trial in Indonesia, Ukraine, and Vietnam: HPTN 074.

BACKGROUND: Persons who inject drugs (PWID) have high HIV incidence and prevalence, and may have limited access to antiretroviral therapy (ART) in some settings. We evaluated HIV drug resistance in PWID in a randomized clinical trial (HPTN 074). The study intervention included ART at any CD4 cell count with enhanced support for ART and substance use treatment. METHODS: HPTN 074 enrolled HIV-infected PWID (index participants) with viral loads ≥1,000 copies/mL and their HIV-uninfected injection-network partners in Indonesia, Ukraine, and Vietnam; the study limited enrollment of people who reported being on ART. HIV drug resistance testing and antiretroviral (ARV) drug testing were performed using samples collected from index participants at study enrollment. RESULTS: Fifty-four (12.0%) of 449 participants had HIV drug resistance; 29 (53.7%) of the 54 participants had multi-class resistance. Prevalence of resistance varied by study site and was associated with self-report of prior or current ART, detection of ARV drugs, and a history of incarceration. Resistance was detected in 10 (5.6%) of 177 newly diagnosed participants. Participants with resistance at enrollment were less likely to be virally suppressed after 52 weeks of follow-up, independent of study arm. CONCLUSIONS: In HPTN 074, many of the enrolled index participants had HIV drug resistance and more than half of those had multi-class resistance. Some newly-diagnosed participants had resistance, suggesting that they may have been infected with drug-resistant HIV strains. Behavioral and geographic factors were associated with baseline resistance. Baseline resistance was associated with reduced viral suppression during study follow-up. These findings indicate the need for enhanced HIV care in this high-risk population to achieve sustained viral suppression on ART.

Injection practices in 2011-2015: a review using data from the demographic and health surveys (DHS).

BACKGROUND: Reuse of injection devices to give healthcare injections decreased from 39.8 to 5.5% between 2000 and 2010, but trends since 2011 have not been described. We reviewed results of Demographic and Health Surveys (DHS) to describe injection practices worldwide from 2011 to 2015. METHODS: We searched the DHS Internet site for data published on injection practices conducted in countries from 2011 to 2015, extracted information on frequency (number of healthcare injections per person in the last 12 months) and safety (proportion of syringes and needles taken from a new, unopened package). We compared gender groups and WHO regions in terms of frequency and safety. For countries with data available, we compared injection practices 2004-2010 and 2011-2015. RESULTS: Since 2011, 40 of 92 countries (43%) that conducted DHS surveys reported on injection practices. On average, the frequency of injection was 1.64 per person per year (from 3.84 in WHO Eastern Mediterranean region to 1.18 in WHO African region). Among those, 96.1% of injections reportedly used new injection devices (from 90.2% in the WHO Eastern Mediterranean region to 98.8% in the WHO Western Pacific region). On average, women received more injections per year (1.85) than men (1.41). Among 16 (40%) countries with data in 2004-2010 and 2011-2015, 69% improved in terms of safety. The annual number of unsafe injections reduced in 81% of countries. In Pakistan, the number of unsafe injections was the highest and did not decrease between 2006 and 2012. CONCLUSIONS: Injection practices have continued to improve in most countries worldwide, although the Eastern Mediterranean region in particular still faces unsafe practices that are not improving. Further efforts are needed to eliminate unsafe injection practices in health care settings, including through the use of reuse-prevention devices. Despite some limitations, DHS is an easily available method to measure progress over time.

Young Women's Stated Preferences for Biomedical HIV Prevention: Results of a Discrete Choice Experiment in Kenya and South Africa.

BACKGROUND: Integrating end-user perspectives into the design of new biomedical HIV prevention products is recognized as vital to informing the product development pipeline. SETTING: Kisumu, Kenya; and Soshanguve, South Africa. METHODS: We conducted a discrete choice experiment survey with 536 women aged 18-30 years to assess preferences for hypothetical HIV prevention products characterized by the attributes of efficacy, pregnancy prevention, delivery form, dosing frequency, and side effects. Participants included product-experienced women from Tablet, Ring, Injection as Options TRIO, a cross-over clinical study evaluating 3 placebo delivery forms (oral tablets, vaginal rings, and injections), and a product-naive sample recruited from the same communities. Analyses used random parameters logit and latent class models. RESULTS: HIV prevention efficacy was a strong determinant of stated choice overall; however, in South Africa, delivery form was just as important, with an injection every 2-3 months most preferred and a daily oral tablet least preferred. In Kenya, product-experienced women preferred monthly injections and least preferred a monthly ring. Respondents indicated a preference for multipurpose prevention technologies that combine HIV and pregnancy protection. Latent class analyses confirmed these findings and delineated heterogeneity in preferences across subgroups defined by age, past experience with the delivery forms, and education. CONCLUSIONS: Despite an overall preference for products with high efficacy, we identified attributes salient to future uptake and use of HIV prevention products. Preferences for injectable products underscored interest in this pre-exposure prophylaxis delivery form. Likewise, the multipurpose prevention technology feature was valued in both Kenya and South Africa and most influenced interest in vaginal rings.

Does the frequency of administration of long acting injectable antipsychotics impact psychiatric outcomes and adverse effects: A systematic review and meta-analysis.

Dosing regimens for depot antipsychotics range from two-to twelve-weekly administration. There are limited meta-analytic data regarding the effect of different injection frequencies of the same depot antipsychotic at the equivalent dose on psychiatric outcomes and adverse effects. This study investigated differences in psychiatric outcomes and adverse effects between different frequencies of depot antipsychotics through a systematic review and meta-analysis. We performed a systematic search of MEDLINE, EMBASE, Cochrane database, PsycINFO and two Chinese databases for RCTs that compared the frequency of depot antipsychotic administration. The primary outcome was psychiatric symptomatology, with secondary outcomes of quality of life, admission rates, adverse drug reactions, cost-effectiveness and compliance. Twelve studies were included in the meta-analysis. Most studies compared two- and four-weekly injections (n = 10). Different injection frequencies did not lead to differences in clinical outcomes or adverse events. However, two-weekly injections led to significantly greater improvements on the CGI-S scale than four-weekly administration. A sensitivity analysis by removing low quality studies showed lower incidence of somnolence and injection site pain for 2-weekly compared with 4-weekly injections. There were limited data on admission rates and no RCT data on cost-effectiveness or compliance. While there is limited evidence on secondary measures to support 2-weekly over 4-weekly injections, patient choice and convenience should remain the priority when considering certain antipsychotics. Cost-effectiveness and adherence should also be considered, although further studies are required to further evaluate these parameters.

Development of an ultra-high performance liquid chromatography-tandem mass spectrometry method for the determination of anabolic steroids currently available on the black market in the Czech Republic and Slovakia.

Over the past decade, the use of anabolic androgenic steroids (AAS) by recreational bodybuilders and regular gym members has been increasing exponentially. However, there is a lack of knowledge on AAS products sold in the Czech Republic and Slovakia. The aim of this study was to assess the quantity of active substances in AAS products obtained from AAS users in the Czech Republic and Slovakia. In addition, the study also examines the current trends in counterfeit AAS products used by recreational bodybuilders and regular gym members. For this purpose, the authors developed and validated a universal ultra-high performance liquid chromatography with tandem mass spectrometry method to determine the most popular doping substances in different pharmaceutical formulations (oil-based injectables, tablets, and capsules). This method was successfully utilized for the analysis of 358 AAS products. Our results showed that 58.9% AAS products analyzed contained the declared active substances at the declared concentrations, 15.9% contained no active substance, 16.8% were under-concentrated, 4.5% contained active substances different from those declared on the label, and 3.6% products were over-concentrated. Alarmingly, the results demonstrated that over 40% of the AAS analyzed failed to meet label claims and therefore may pose serious health risks to consumers. This study also highlighted that the availability of AAS should be more rigorously restricted and their quality closely monitored in order to protect AAS users. In conclusion, the authors have developed a precise, accurate, sensitive, selective, and robust method for the routine screening of products containing anabolic androgenic steroids.