Do you suspect that you have low levels of testosterone for your age? With our venous blood test, you can measure the total testosterone, albumin, and SHBG in your blood to estimate the amount of testosterone available in your body. Total testosterone is the amount of testosterone present in your body. However, not all this testosterone is available for the body to use because some of it is bound to a protein called sex hormone binding globulin (SHBG) and cannot be released to the cells. A proportion of testosterone is also loosely bound to another protein called albumin. The rest of the testosterone in the body (about 1-2%) is unbound or free for the cells to use. Our free testosterone test looks at your total testosterone, albumin, and SHBG levels to calculate the amount of testosterone available in your body for your cells to use. Our test is ideal for men who want to investigate low testosterone symptoms or who have previously had a normal or borderline-low result but still suffer symptoms. With this test, you can see how much free testosterone is available to your body’s tissues. Prepare for your Free Testosterone Blood Test by following these instructions. Please take your sample before 10am. If you use hormone gels, pessaries, patches, or tablets, we strongly recommend selecting a venous sample to minimise contamination.