Evaluación de la insulinemia post carga oral de glucosa como método diagnóstico de resistencia a la insulina / Evaluation of serum insulin levels after an oral glucose load for the diagnosis of insulin resistance
Rev. méd. Chile
; 142(9): 1106-1112, set. 2014. ilus, tab
Article
in Es
| LILACS
| ID: lil-730280
Responsible library:
CL1.1
ABSTRACT
Background:
In our country, the assessment of insulin resistance (IR) measuring serum insulin levels at 60 and 120 minutes after a 75 g oral glucose tolerance test (OGTT), is usual. However, there is no information about the distribution of serum insulin levels in the Chilean population.Aim:
To assess the distribution of serum insulin levels at 60 and 120 minutes during OGTTs and suggest a statistical cut-off point to estimate the degree of IR. Material andMethods:
Retrospective analysis of 1815 OGTTs performed in non-diabetic subjects aged between 18 and 75 years, at a university medical center. HOMA-IR (Homeostasis Model Assessment), insulin sensitivity index of Matsuda (ISI-Composite), and their correlation with serum insulin levels at 60 and 120 minutes were calculated.Results:
The 75th percentiles for serum insulin levels at 60 and 120 minutes were 127 and 81 µU/mL, respectively. There was a high correlation between HOMA-IR and ISI-Composite (r = -089, p < 0.001). There was a weaker although significant correlation between HOMA-IR and ISI-Composite and insulin levels at 60 (r = 0.56 and -0.79 respectively, p < 0,001) and 120 minutes (r = 0.54 and -0.75 respectively, p < 0,001).Conclusions:
We propose 60 and 120 min serum insulin levels of 130 and 80 µU/mL respectively, as cut-off values for normality during OGTT in Chilean normoglycemic individuals.Key words
Full text:
1
Index:
LILACS
Main subject:
Insulin Resistance
/
Hyperinsulinism
Type of study:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
Limits:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
Language:
Es
Journal:
Rev. méd. Chile
Journal subject:
MEDICINA
Year:
2014
Type:
Article