The TRT lab calendar at a glance
Most of your blood work on TRT happens in the first year, then it settles into a steady rhythm. The table pulls together the Endocrine Society guideline and the AUA guideline, which agree on the broad shape and differ a little on intervals.
| When | What is checked | Why |
|---|---|---|
| Before starting | Two early-morning total testosterone results, hemoglobin and hematocrit, PSA (men over 40), LH, estradiol | Confirms the diagnosis and sets baselines |
| 7 days after starting oral Kyzatrex | Testosterone, 3 to 5 hours after the morning dose | The label’s first dose check |
| Around 3 months | Testosterone timed to your dose, hematocrit; PSA can be rechecked here | The Endocrine Society window for the first testosterone and hematocrit check is 3 to 6 months |
| Around 6 months | Testosterone, hematocrit, PSA if not yet repeated | Confirms a steady dose; the PSA recheck window closes at 12 months |
| Yearly after that | Testosterone, hematocrit, PSA by shared decision | The AUA suggests testosterone and hematocrit every 6 to 12 months |
| After 1 to 2 years, if you have osteoporosis | Bone density scan | Checks the skeletal response |
The schedule is a frame, not a fixed rule. Your own dates depend on your form of testosterone and how quickly your dose settles.
Why does the first year get more checks?
The first months are when the dose is found and when side effects tend to show up. Testosterone has to reach a repeating pattern before a blood level means much: the AUA says to wait at least three to four cycles of short-acting injections before the first check, and the Kyzatrex label asks for a level 7 days after starting.
Hematocrit is the other early priority. Testosterone stimulates red blood cell production, and the AUA asks for a baseline under 50% and intervention if it reaches 54% on treatment. Catching a rise before it nears that line is the point of the early checks.
What is each marker for?
Testosterone
It confirms the dose puts you in the target range. When the draw happens relative to your last dose changes the number, so read our page on trough vs peak labs on TRT before booking.
Hematocrit and hemoglobin
These come from a complete blood count. Rising red cells thicken the blood, which is why both guidelines set a ceiling. Our hematocrit blood test page explains the thresholds and what raises them.
PSA
Testosterone can raise PSA slightly. The Endocrine Society asks for a PSA 3 to 12 months after starting and refers men to urology for a rise of more than 1.4 ng/mL within the first 12 months or a confirmed value above 4.0 ng/mL. MedlinePlus advises avoiding ejaculation for 24 hours before a PSA draw. See rising PSA on TRT for how a change is read.
Estradiol and general health markers
The AUA asks for estradiol when breast symptoms appear on treatment and in anyone taking an aromatase inhibitor. Lipids, blood sugar, liver and kidney markers belong in a yearly health review, and the Kyzatrex label specifically asks for periodic lipid checks, particularly after starting.
When do you need labs sooner?
Some events add an extra draw outside the calendar:
- A dose or interval change, checked once the new dose has settled.
- A switch between forms, such as injections to pellets or capsules.
- New symptoms, such as breast tenderness, or your old low-testosterone symptoms coming back.
- A hematocrit near the ceiling, which calls for a closer recheck.
- Planned surgery, or restarting after a long gap in treatment.
If you have already missed a scheduled draw, our page on missed TRT follow-up labs explains how to get back on track.
What decides your own schedule?
The calendar above is the frame, and a few facts that only your clinician can weigh fill in the dates:
- Your form of testosterone. Kyzatrex has a label-defined 7-day check, injections need several cycles before a steady reading, and pellets are measured at the end of their interval.
- Your starting numbers. A baseline hematocrit near 50% or a PSA near a threshold means closer follow-up.
- Your age and history. After the first year, PSA follows prostate screening guidance, which depends on age and risk.
- How stable you are. A man whose levels and symptoms have held steady for a couple of years needs fewer checks than one still being adjusted.
How follow-up labs work at Ultimate Male
Follow-up draws happen on site at our San Gabriel and Downey clinics, with results usually back in 24 to 48 hours, so a lab visit and a review can sit close together. Before each draw, your provider tells you which markers are due and where in your dosing cycle the blood should be taken.
The number of lab visits in your first year depends on your form of testosterone therapy and how quickly your dose settles, so it is set in your plan rather than published as a fixed package. For what drives the cost of monitoring, see TRT lab monitoring cost, and ask for an exact quote on the free 10-minute call before you book. Our page on TRT visits in the first year shows how labs fit around appointments.
