Which tests answer which question
| Your question | Tests to ask about | Our guide |
|---|---|---|
| Could my symptoms be low testosterone? | Total testosterone, measured early in the morning on two separate occasions, plus SHBG or a direct free-testosterone measurement. LH shows whether the cause is in the testes or in the signal from the brain. | Getting tested Low T symptoms |
| What should be checked before and during TRT? | Hemoglobin and hematocrit, PSA if you are over 40, estradiol if you have breast symptoms, and a fertility evaluation if you want children. Testosterone and hematocrit are then rechecked on a schedule. | TRT bloodwork schedule |
| What is my heart and metabolic risk? | Lipid panel, A1c or fasting glucose, and ApoB. Lp(a) is worth measuring once in your life, because it is genetic and barely changes. | Know your numbers Cholesterol & heart risk |
| Should I take vitamin D? | A 25-hydroxy vitamin D test shows whether supplementing is worth it. | Supplements |
| What screening is due at my age? | It depends on your age and risk factors. | Checkups & vaccines |
Three ways to get bloodwork
1. Your own doctor
A primary care doctor or urologist can order any of the tests above, and insurance may cover them when there is a medical reason. The result also goes straight to someone who can examine you and act on it. If you have a doctor you trust, start here.
2. A TRT provider's panel
Every careful TRT provider requires labs before prescribing. What differs is who pays. Some build labs into the monthly price, and others bill them separately:
- Included: Fountain includes a draw at a local partner lab, and Henry Meds and JoinFridays say labs are included in their price.
- Billed separately: TRT Nation requires a $129 lab panel, Maximus sells lab kits at $99 each, and Marek Health's minimum panel is $450.
These figures come from our reviews and can change, so confirm them with the provider. Lab fees are one of the main reasons the advertised monthly price understates the real cost. See what TRT costs per year.
3. An independent lab service
Independent services let you order a panel yourself and get the results directly. They don't write prescriptions. They are useful when you want a baseline before paying a provider's intake fee, a second opinion on a number, or a copy of results that belongs to you.
Before you order, ask the provider you are considering whether it accepts outside labs. Some do, and some require their own panel regardless.
Getting a result you can trust
- Draw in the morning. Testosterone runs highest between 7 and 10 a.m. and drifts down through the day, so an afternoon draw can look falsely low.
- Repeat a low result. A diagnosis of low testosterone takes two early-morning measurements on separate occasions, not one.
- Use the same lab when you repeat. Results from the same lab and the same assay are easier to compare.
- Don't test total testosterone alone. Adding SHBG or free testosterone catches a low free level that total testosterone can miss.
- If you are already on TRT, the right draw time depends on your format. See getting accurate draws.
What a lab result can't tell you
A number outside the reference range is a reason to talk to a clinician, not a diagnosis. Fatigue, low mood, and low libido have many causes, including poor sleep, depression, and metabolic problems, and a normal testosterone result does not rule those out. An independent lab result also can't get you a prescription on its own. Treatment decisions belong with a licensed clinician who knows your history.