Feminising Hormone Blood Tests

This page provides information about blood tests for feminising hormone therapy, including oestradiol, testosterone, prolactin and routine monitoring used in gender-affirming care.

Blood tests help clinicians review hormone levels, monitor wider health markers and make safer decisions about ongoing treatment.

Why monitoring matters

Monitoring can help clinicians understand whether feminising hormone treatment is within a suitable range for you, whether any changes may be needed, and whether further review or follow-up is required.

Blood tests may be used before treatment starts, during dose changes, and as part of ongoing gender-affirming hormone care.

What feminising hormone blood tests may support

• Baseline checks before feminising hormone treatment is considered
• Monitoring oestradiol and testosterone levels over time
• Reviewing prolactin and other relevant markers where clinically needed
• Supporting safe dose review and ongoing prescribing decisions
• Helping identify when further review or follow-up may be needed
  

Important note

Your clinician will confirm which blood tests are needed based on your medication, pathway, health history and individual circumstances.