Hormone
- Total TestosteroneTotal testosterone measures the full circulating testosterone in serum, both bound and free.
- Free TestosteroneFree testosterone is the unbound, biologically active fraction of total testosterone.
- SHBG (Sex Hormone Binding Globulin)SHBG is a liver-produced protein that binds testosterone and estradiol in serum.
- Estradiol (E2)Estradiol is the dominant circulating estrogen, present in both men and women.
- IGF-1 (Insulin-like Growth Factor 1)IGF-1 is the downstream marker of growth hormone signaling, produced primarily by the liver in response to GH.
- TSH (Thyroid Stimulating Hormone)TSH is the pituitary signal that drives thyroid hormone production.
- Free T3Free T3 is the active thyroid hormone available to tissues.
- Free T4Free T4 is the storage form of thyroid hormone, converted to T3 in tissues.
- PTH (Parathyroid Hormone)PTH governs calcium and bone homeostasis.
Cardiovascular
Inflammation
Metabolic
Definitional and functional context only. A measurement is not a diagnosis, and reference intervals vary by laboratory, sex and age.
First Orders · This Month
50% off your first month.
Apply code PEPTIDE50 at checkout for half off the first month of an eligible peptide or weight-loss protocol. Treatment begins only if a licensed clinician in your state approves it after reviewing your intake.
One use per customer, first order only, 1-month plan only. If a clinician does not approve treatment, you are refunded. Compounded medications are not FDA-approved.