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1.
Clin Chem ; 65(1): 170-179, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30518663

RESUMO

BACKGROUND: For transgender individuals taking hormone therapy (HT), data on laboratory values are limited, and the effects on laboratory values cannot be easily predicted. We evaluated the impact on common laboratory analytes in transgender individuals before and after initiation of HT. METHODS: We conducted a retrospective chart review of transgender patients identified at transgender-specific clinics at an urban county hospital and community clinic. Laboratory data were collected on hormone concentrations, hematologic parameters, electrolytes, lipids, and liver and renal markers before and after initiation of HT. RESULTS: We identified 183 transgender women (TW) and 119 transgender men (TM) for whom laboratory data were available. In all, 87 TW and 62 TM had baseline laboratory data, and data were also available for 133 TW and 89 TM on HT for >6 months. The most significant changes were seen in red blood cell count, hemoglobin concentration, hematocrit, and creatinine levels after >6 months of HT, which increased in TM and decreased in TW after HT (P < 0.005; d index > 0.6). Alkaline phosphatase, aspartate aminotransferase, and alanine aminotransferase levels increased in TM; however, the effect size was small (d index < 0.5). Calcium, albumin, and alkaline phosphatase levels significantly decreased in TW (P < 0.001; d > 0.6). Additionally, TM were found to have increased triglycerides and decreased HDL levels (P < 0.005; d > 0.6). CONCLUSIONS: Changes occur in several common laboratory parameters for patients on HT. Some laboratory values changed to match the gender identity, whereas others remained unchanged or were intermediate from the baseline values. These findings will help guide interpretation of laboratory test results in transgender patients taking HT.


Assuntos
Técnicas de Laboratório Clínico , Terapia de Reposição Hormonal , Pessoas Transgênero , Adulto , Feminino , Testes Hematológicos , Humanos , Testes de Função Renal , Testes de Função Hepática , Masculino , Estudos Retrospectivos
2.
J Appl Lab Med ; 6(1): 27-40, 2021 01 12.
Artigo em Inglês | MEDLINE | ID: mdl-33313748

RESUMO

BACKGROUND: Known physiological changes occur while transgender patients are taking hormone therapy (HT). However, knowledge is limited about when laboratory values stabilize and if there are any long-term impacts, making it challenging for physicians to provide adequate gender-affirming care. We aim to analyze laboratory values with HT use over 5 years and after discontinuation of HT to define when values achieve stability. METHODS: We performed a multicenter retrospective analysis of 126 transgender women (TW) and 91 transgender men (TM) at consecutive clinic visits. Labs included complete metabolic panel, complete blood count, lipids, and hormone levels and were monitored for 5 years. Absolute measurement and percentage change from baseline were calculated for each analyte value. We collected the laboratory studies described from patients off HT and the duration of discontinuation to determine the time to return to baseline levels. RESULTS: During HT, red blood cell (RBC; erythrocyte) indexes reach stable levels within 6 months (P < 0.001) and are unchanged long term. Some analytes such as HDL and platelets showed increases beyond the first year of HT in TW (P = 0.001 and P < 0.001, respectively). LDL and alanine aminotransferase increased beyond 1 year in TM (P < 0.005 and P < 0.001, respectively), whereas HDL decreased beyond 1 year (P < 0.001). Time for laboratory values to return to baseline occurred around 10 weeks. CONCLUSIONS: Most analytes reach stable levels within 6 months (RBC and creatinine), whereas others change in the long term (LDL, HDL, platelets). This information can be used to guide physicians as they monitor their transgender patients in all stages of their progress through HT.


Assuntos
Pessoas Transgênero , Feminino , Terapia de Reposição Hormonal , Hormônios , Humanos , Laboratórios , Masculino , Estudos Retrospectivos
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