Low testosterone in men causes loss of muscle mass, decreased energy and libido, and infertility. These generalized symptoms are a result of testosterone hormone affecting variety of different organs and tissue in the body.
In young adults and adolescents, difficulty gaining muscle mass despite strength resistance exercise and failure of development of facial beard and deepening of voice suggest low testosterone.
Due to testosterone being highest in the morning, measurements are done between the hours of 8 AM and 10 AM to better discriminate normal and borderline normal results. If an initial measurement is low or borderline, total testosterone measurement is repeated a second time.
Arrive between 8 AM and 10 Am for blood collection.
In 24 hours following blood collection.
1. If your Having above symptoms
2. As part of male infertility work up
3. *The endocrine society recommends being screened for testosterone deficiency If you have the following medical conditions in which low testosterone is prevalent; Type 2 Diabetes, Advanced Renal Failure on Hemodialysis, Having suffered law trauma bone fracture at a young age, osteoporosis in a male, Advanced COPD, being on medications that affect testostrone production such as high-dose steroids and or opioid pain medications.
*Reference: Testosterone therapy in men with androgen deficiency syndromes: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2010;95(6):2536