11 doctors weighed in:

How is testosterone levels measured?

11 doctors weighed in
Dr. Alvin Lin
Internal Medicine - Geriatrics
10 doctors agree

In brief: Carefully!

Sorry! i couldn't resist.
Testosterone is typically measured by blood test, same as you might do to check for high cholesterol or diabetes. Testosterone levels vary depending upon time of day, highest in morning & lowest in afternoon/evening. Normal reference range depends upon lab & equipment used as well as test ordered. You can also check levels via saliva although this isn't standardized.

In brief: Carefully!

Sorry! i couldn't resist.
Testosterone is typically measured by blood test, same as you might do to check for high cholesterol or diabetes. Testosterone levels vary depending upon time of day, highest in morning & lowest in afternoon/evening. Normal reference range depends upon lab & equipment used as well as test ordered. You can also check levels via saliva although this isn't standardized.
Dr. Alvin Lin
Dr. Alvin Lin
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1 comment
Dr. Gurmukh Singh
Often, it is the level of free testosterone that needs to be determined as the total level is affected by the concentration of binding proteins.
Dr. Michael Sinclair
Family Medicine

In brief: Total and Free

Measuring total testosterone is easy.
The standard test for free testosterone (that is the part that is available to help you) is notoriously unreliable. The best test for free testosterone is equilibrium dialysis, and it is expensive. Free testosterone can be adequately estimated if you know your total, your sex hormone binding globulin and your Albumin levels.

In brief: Total and Free

Measuring total testosterone is easy.
The standard test for free testosterone (that is the part that is available to help you) is notoriously unreliable. The best test for free testosterone is equilibrium dialysis, and it is expensive. Free testosterone can be adequately estimated if you know your total, your sex hormone binding globulin and your Albumin levels.
Dr. Michael Sinclair
Dr. Michael Sinclair
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