Related Experiment Video
Updated: Nov 26, 2025

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
Published on: August 13, 2019
Reference Intervals of Total Testosterone in Adult Filipino Men
Myrna Buenaluz-Sedurante1, Mark Isaiah K Co2, Daryl Jade T Dagang2
1Department of Physiology, University of the Philippines College of Medicine, Manila, Philippines.
Background:
The reference range of total testosterone needs to be established locally as ethnic differences in adiposity, insulin sensitivity, and sex hormone-binding globulin (SHBG) levels may affect total testosterone levels. The aim of this study is to establish the reference intervals of total testosterone from healthy, young adult Filipino males.
Methods:
The study included 110 healthy, Filipino male volunteers aged 21-40, studying or working at the University of the Philippines Manila. Clinical history, height, weight, body mass index (BMI), and blood pressure (BP) were obtained, and blood for total testosterone, SHBG, albumin, insulin, fasting blood sugar (FBS), and total cholesterol was collected. Free testosterone was calculated using Vermeulen's formula. The 2.5th to 97.5th percentiles of subjects for total testosterone were used as the normative range for Filipino men.
Results:
The reference range of total testosterone is 7.33-53.01 nmol/L.
Conclusion:
The present study derived reference ranges of total testosterone using data from apparently healthy, young adult men to support clinical services.
Related Concept Videos
Testosterone: Functions and Regulation
Blood Studies for Cardiovascular System III: Serum Lipid Profile
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
Disorders of the Male Reproductive System
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra....
Serum Studies: Renal Function Tests

