Testosterone replacement therapy needs careful biomarker monitoring. Beyond testosterone itself, several other markers shift with treatment and need tracking to keep therapy safe and effective.
Core monitoring panel
Total and free testosterone. SHBG. Oestradiol (some testosterone converts to oestradiol via aromatisation). Haematocrit and haemoglobin (TRT can raise red blood cell count). PSA in older men. Lipid profile.
When to test on TRT
Typically just before your next dose (trough level) gives the most useful clinical information. Your prescribing clinician will specify timing. Test at the same point in the cycle each time for comparable results.
Markers that need watching
Haematocrit above 54 percent (sometimes 50 percent depending on clinician) signals increased clotting risk and usually triggers a dose review or therapeutic phlebotomy. Rising oestradiol above the typical reference range can produce side effects like water retention or breast tissue changes.
Chxhealth role on TRT
Chxhealth provides the testing and the report. Chxhealth is a biomarker and genetic data provider. We do not diagnose, treat or prescribe. Our service supports your wellbeing journey alongside your healthcare professional. Treatment decisions remain with your prescribing clinician.
Chxhealth panels for this
Related biomarker guides
Frequently asked questions
Can I get TRT through Chxhealth?
No. Chxhealth provides blood testing and reports only. TRT requires a clinical assessment and prescription from a qualified clinician.
Why monitor oestradiol on TRT?
Testosterone partly converts to oestradiol via the enzyme aromatase. Rising oestradiol on TRT can cause side effects and is a routine part of monitoring.
About this article. Educational content. Chxhealth is a biomarker and genetic data provider. We do not diagnose, treat or prescribe. Our service supports your wellbeing journey alongside your healthcare professional. For medical advice about your health or results, please speak to a qualified clinician.
