Compare this test’s laboratory options
Testosterone, Free, Bioavailable and Total, MS
Quest Diagnostics1 test optionFrom $63.00
Testosterone, Free, Bioavailable and Total, MS
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
Testosterone, Free, Bioavailable and Total, MS
This test is crucial for evaluating testicular function in males and for managing conditions like hirsutism and virilization in females. It measures the levels of free, bioavailable, and total testosterone in the body, providing comprehensive insights into an individual's hormonal balance.
Who should consider this test?This test is particularly useful for individuals experiencing symptoms related to hormonal imbalances such as: • Low sex drive
• Erectile dysfunction in males
• Excessive hair growth in females
• Menstrual irregularities in females
• Decreased muscle mass
• Mood changes
What type of sample is required for this test?2.8 mL of serum collected in a red-top tube (no gel).
Proper collection is crucial for accurate results.
Test Resources
https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq294 https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq290 http://education.questdiagnostics.com/faq/FAQ165
Additional test information
Helpful in assessing testicular function in males and managing hirsutism, virilization in females.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
Testosterone, Free, Bioavailable and Total, MS
This test is crucial for evaluating testicular function in males and for managing conditions like hirsutism and virilization in females. It measures the levels of free, bioavailable, and total testosterone in the body, providing comprehensive insights into an individual's hormonal balance.
Who should consider this test?This test is particularly useful for individuals experiencing symptoms related to hormonal imbalances such as: • Low sex drive
• Erectile dysfunction in males
• Excessive hair growth in females
• Menstrual irregularities in females
• Decreased muscle mass
• Mood changes
What type of sample is required for this test?2.8 mL of serum collected in a red-top tube (no gel).
Proper collection is crucial for accurate results.
Test Resources
https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq294 https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq290 http://education.questdiagnostics.com/faq/FAQ165
Additional details
Helpful in assessing testicular function in males and managing hirsutism, virilization in females.
Highlighted health areas
- Women's health
- Hormones
- Men's health
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Testosterone, Free
- Albumin
- Testosterone, Total
- Sex Hormone Binding Globulin (SHBG)
- Testosterone, Bioavailable