SHBG — What It Means in Your Blood Test
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This is a carrier protein that holds sex hormones and controls how much your body can use.
Your SHBG result shows how much of this carrier protein is present, shaping how freely sex hormones reach your tissues. It rarely stands alone, since it helps explain testosterone and estrogen figures.
Also known as: Sex hormone-binding globulin, Sex steroid-binding globulin, Testosterone-estrogen binding globulin, TEBG
This isn't a case where higher or lower is better. Your body keeps it in a narrow band, and both directions can matter.
Last reviewed: 2026-08-16
What is SHBG?
SHBG is a protein made mainly by the liver. It binds testosterone and estradiol, and this controls how much reaches your tissues.
Why is SHBG tested?
You may have this test to help make sense of testosterone and estrogen results. It helps most when your symptoms do not match the totals.
What is a normal SHBG range?
- India
- No India-specific national reference interval is published for this parameter; your lab's printed range is the most reliable comparison.
- Global
- Women: 18–144 nmol/L; Men: 10–57 nmol/L (ranges are age-dependent and vary by lab)
Ranges vary by lab, method and equipment — the range printed on your own report is the one that applies to your result.
Source: [Endocrine Society, 2018]
What does your SHBG value mean?
There is no widely-accepted set of value bands for this parameter. Compare your result with the reference range printed on your own report, and discuss it with your doctor.
What does a high SHBG result mean?
A high result means more sex hormones are held by this protein. That can leave a smaller usable share for your tissues, which your doctor can interpret.
What does a low SHBG result mean?
A low result leaves a larger usable share of sex hormones. It often goes with higher body weight, insulin resistance, or an underactive thyroid. This is worth discussing with your doctor.
What can affect your SHBG result?
- Estrogen pills (raise it)
- Higher body weight and insulin resistance (lower it)
- Thyroid status
- Liver function (the main place it is made)
- Aging (it tends to rise with age in men)
Questions to ask your doctor
About this result
- What does my SHBG result mean for me specifically, given my age and health?
- Is my SHBG in the range that is right for me, not just the lab's general range?
What to do next
- Could anything I eat, do, or take have affected my Sex hormone carrier protein result?
- Is there anything I should do about my SHBG, or is it fine to leave as it is?
About retesting
- Does my SHBG need to be repeated, and if so, when?
- The typical range for SHBG can vary between labs — should I compare my result against my own lab's printed range?
The bigger picture
- Should my SHBG be looked at together with my Total Testosterone and Free Testosterone result?
- Does my SHBG connect to any condition I already have, or to anything I have noticed in how I feel?
Frequently asked questions
- What is SHBG?
- SHBG is a protein made mainly by the liver. It binds testosterone and estradiol, and this controls how much reaches your tissues. You may have this test to help make sense of testosterone and estrogen results. It helps most when your symptoms do not match the totals.
- What is a normal Sex hormone carrier protein range?
- A typical adult range is around Women: 18–144 nmol/L; Men: 10–57 nmol/L (ranges are age-dependent and vary by lab). No India-specific national reference interval is published for this parameter; your lab's printed range is the most reliable comparison. Ranges vary by lab, method and equipment — the range printed on your own report is the one that applies to your result.
- What does a high SHBG result mean?
- A high result means more sex hormones are held by this protein. That can leave a smaller usable share for your tissues, which your doctor can interpret.
- What does a low SHBG result mean?
- A low result leaves a larger usable share of sex hormones. It often goes with higher body weight, insulin resistance, or an underactive thyroid. This is worth discussing with your doctor.
- What can affect your SHBG result?
- Several everyday factors can influence it, including Estrogen pills (raise it), Higher body weight and insulin resistance (lower it), Thyroid status, Liver function (the main place it is made), Aging (it tends to rise with age in men).
Sources
- Endocrine Society (2018) — Endocrine Society Clinical Practice Guideline on androgen measurement and SHBG
Part of the Hormones
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