Sex hormone-binding globulin (SHBG) binds testosterone, determining how much free (active) testosterone is available. Low SHBG means more free T per dose — but also faster clearance, making injection frequency critical. High SHBG blunts TRT efficacy.
Many AAS compounds (stanozolol, oxandrolone, proviron) are specifically used for their ability to lower SHBG and increase free testosterone fraction, but driving SHBG below 10 nmol/L can cause erratic free hormone levels and symptoms.
Upload your bloodwork and get a full analysis of your SHBG in context with your complete panel — including TRT-specific reference ranges and personalized insights.
Analyze My Bloodwork →GearCheck provides blood marker analysis and harm reduction education. Information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional.