Free testosterone calculator
** References: Vermeulen et al., A critical evaluation of simple methods for the estimation of free testosterone in serum, J Clin Endocrinol Metab (1999) 84(10): 3666-72
A symptomatic response to T therapy is generally seen within 3 months. Monitoring should occur at least 2-3 times during the first year, and 1-2 times per year thereafter. Monitoring should include serum T, PSA levels, and hematocrit/ hemoglobin. There is no need to measure liver or renal function tests for any of the routine T-therapy formulations2.
- Trost LW, Mulhall JP. Challenges in Testosterone Measurement, Data Interpretation, and Methodological Appraisal of Interventional Trials. The journal of sexual medicine. Jul 2016;13(7):1029−46. Return to content
- Antonio L, Wu FC, O'Neill TW, et al. Low Free Testosterone Is Associated with Hypogonadal Signs and Symptoms in Men with Normal Total Testosterone. J Clin Endocrinol Metab. Jul 2016;101(7):2647- 57. Return to content
- Vermeulen A, Verdonck L, Kaufman JM. A critical evaluation of simple methods for the estimation of free testosterone in serum. J Clin Endocrinol Metab. Oct 1999;84(10):3666-72. Return to content