Testosterone Panel

A Total Testosterone value on its own may not tell the full story. Much of the testosterone in your blood is bound to proteins like SHBG and Albumin, which means the amount actually available to tissues can differ significantly from the total. This panel measures the factors that influence testosterone bioavailability, giving you data that may be more informative than a standalone number.

This test may be relevant for:

• Men who want a baseline reading of their testosterone status
• Those experiencing symptoms that could be associated with low testosterone, such as fatigue, reduced drive, or changes in body composition
• Men who have previously had a Total Testosterone result that seemed inconsistent with how they feel
• Anyone looking to track hormonal values over time as part of a health-focused routine

• Total Testosterone (nmol/l, male ref: 8.64-29, female ref: 0.29-1.67): the total amount of testosterone circulating in the blood, both bound and unbound.
• Free Testosterone (pmol/L, male ref: 170-700, female ref: 3-29): the fraction not bound to SHBG or Albumin, representing the bioavailable portion.
• SHBG (nmol/l, male ref: 18.3-54.1, female ref: 32.4-128): Sex Hormone-Binding Globuline, a protein that binds testosterone and reduces its availability to tissues.
• Albumin (g/l): a protein that loosely binds testosterone; used in calculating Free Testosterone.

These four markers together may paint a broader picture of your androgenic hormone balance. For instance, a man with a normal Total Testosterone but elevated SHBG could have lower-than-expected Free Testosterone, which might help explain certain symptoms. Conversely, low SHBG could mean higher bioavailability but may also be associated with metabolic factors worth exploring. By looking at these values in context, you and a healthcare provider can have a more informed conversation about what the numbers may mean for you.

A blood sample is drawn at a certified sample point (afnamepunt). There are over 750 locations across the Netherlands. After placing your order, you can select a location and time that suits your schedule. The appointment typically takes around 10 to 15 minutes.

This panel may be useful when:

• You want to establish a personal baseline for testosterone-related markers
• You are experiencing fatigue, reduced motivation, or changes in body composition and want data to discuss with a healthcare provider
• A previous Total Testosterone result did not seem to match your symptoms
• You are making lifestyle changes and want to track hormonal values over time

Results are presented alongside reference ranges for each marker. Values outside these ranges do not automatically indicate a clinical issue; context matters. For example, SHBG can be influenced by age, body weight, and other factors. A healthcare provider can help determine whether any findings warrant further evaluation or follow-up testing.

Fasting is recommended for more consistent results. Testosterone levels tend to be at their highest in the early morning, so testing between 7:00 and 10:00 AM may provide a more representative reading. Avoid alcohol for 48 hours before the test, as it can temporarily affect testosterone levels.

Results are typically available within a few business days and can be accessed in your personal dashboard. The report includes your values alongside reference ranges. If any results fall outside expected ranges, or if you have questions about what they may mean, consider reviewing them with a healthcare provider.