Advanced TRT (Testosterone Replacement Therapy) Blood Test, from our experts to you.Dr Sam Rodgers MBBS, MRCGP
Chief Medical Officermeet our doctors
What is the Advanced TRT Blood Test?
What is TRT?
What’s included in the TRT blood test panel?
How to prepare for your test
Frequently asked questions
What does TRT mean?
TRT stands for testosterone replacement therapy. It is a form of treatment for men with testosterone deficiency who are also experiencing symptoms of low T. These include reduced sex drive, problems maintaining an erection, low mood, loss of muscle mass and gaining body fat. It involves taking exogenous testosterone (testosterone which is not produced naturally in the body), either in the form of a gel, tablet or by injection.
Why do I need to test before and during TRT?
Taking testosterone supplements can significantly influence other processes in your body – notably hormone and red blood cell production, but also liver and kidney function and cholesterol levels. It is important to test before starting TRT to establish your normal levels for these markers and then again during treatment to monitor the effects of supplementation.
How often should I test during TRT?
We recommend that you test before your TRT begins and then again 6 months later to monitor the effects of treatment.
How can I reduce my haematocrit level on TRT?
There are various ways to reduce haematocrit while on TRT including giving blood, lowering your dose or changing to a topical cream or gel. If you want to donate blood, please do so under medical supervision and ensure that your haematocrit is within acceptable levels for the donation centre.
Will my fertility improve again after TRT?
In most cases sperm count and quality recovers to previous levels once treatment has finished. This process can take time though and depending on the duration and dose used in treatment it may take 12 months or more to get back to normal. In some cases TRT permanently impacts fertility which may limit the ability to conceive in future.
Will TRT affect my fertility?
A common side effect of TRT is low sperm count or infertility (the inability to conceive). Taking testosterone medication or supplements can change the levels of other hormones circulating in the body – in this case it can supress the release of LH and FSH by the pituitary gland, leading to decreased sperm production. Infertility caused by TRT is usually reversible. This TRT profile tests for various male reproductive hormones (including FSH, LH and prolactin) to help you monitor the effects that treatment may have on your fertility.
Is TRT a risk for prostate cancer?
While current research indicates that TRT is unlikely to increase the risk of prostate cancer caution is still advised, particularly for men who already have prostate cancer. We recommend having a physical examination of your prostate gland before commencing TRT and monitoring your prostate-specific antigen (PSA) levels during your treatment. However, you should be aware that there are shortcomings in testing PSA. For more information on testing PSA, read our helpful medical guide, what is PSA and should I test it?
Does this test tell me if I can take TRT?
TRT can have a positive, life-changing effect on men with low natural levels of testosterone, but it is not appropriate for everyone. This test will confirm if you have low testosterone, but you will also need to show symptoms of testosterone deficiency to be eligible for treatment. The British Society for Sexual Medicine recommends that treatment is not given to men with certain stages of prostate cancer, breast cancer, high haematocrit (the percentage of red cells in your blood), severe chronic heart failure or an active desire to have children. This profile contains tests for haematocrit and for prostate-specific antigen (PSA), a protein which can be raised in cases of prostate cancer. It can also be raised in benign conditions too.