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🩸 Blood Work

What baseline blood work do I need before starting TRT?

Asked in r/Testosterone · Answered by the HeydayMD team ·

I think my testosterone is low and want to get my levels checked before looking into treatment. What exact labs should I ask for and when should I get my blood drawn?

The short answer

A comprehensive baseline panel should include total testosterone, free testosterone, SHBG, estradiol, LH, FSH, a complete metabolic panel, lipid profile, CBC, and thyroid markers like TSH. Because testosterone production follows a diurnal rhythm, it is critical to have your blood drawn while fasting in the early morning between 7:00 AM and 10:00 AM. At HeydayMD, our expert clinicians carefully evaluate these foundational labs alongside your symptoms to ensure an accurate diagnosis before mapping out any personalized protocol.

Every body is different. A licensed provider can look at your own labs and symptoms.

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The information on this page is for educational purposes only and is not medical advice. Questions are paraphrased from public Reddit discussions, which are linked for reference — HeydayMD is not affiliated with Reddit. Answers are general education written by the HeydayMD team, not individual guidance. Always talk to a licensed healthcare provider before making treatment decisions.