Testosterone, Total
Fasting RequiredWhat This Test Measures
Measures total testosterone (bound + free) in blood; primary test for hypogonadism and androgen excess.
Preparation
TRT/INJECTION TIMING: The TRT community recommends drawing at trough — just before your next injection — to see your lowest level, which is the standard for dose adjustment. For women on testosterone BHRT, community guidance indicates LabCorp delivers the most accurate results, as immunoassay methods used by some labs can report falsely elevated values. Draw at trough for women too. These notes reflect common practices in TRT/BHRT communities and may differ from standard lab guidelines.
Reflects common practices in thyroid, BHRT, and functional medicine communities. This may differ from standard clinical guidelines. Not medical advice — always discuss with your provider.
General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.
Turnaround Time
Varies by lab
Clinical Notes
Should be drawn before 10 AM; fasting preferred but not always required
ICD-10 Codes
Common diagnosis codes associated with this test. Codes are assigned by your provider.
Self-Pay Pricing
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Uses LabCorp draw centers · Not available in NY, NJ, RI, HI, ND, or VT · Membership may be required
Uses both Quest and Labcorp networks; competitive pricing; broad test selection
Uses Quest and Labcorp; strong panel bundling; results in 1-3 days
Uses Quest Diagnostics network; good panel pricing; established DTC provider
Uses Labcorp network; known for supplement company; competitive lab test pricing
Uses Quest Diagnostics network; generally lowest DTC prices; not available in NY, NJ, RI
Uses Quest and Labcorp; no hidden draw or facility fees; moderate pricing
Uses Quest and Labcorp networks; offers both individual tests and discounted panels
Labcorp consumer-direct platform; 2,000+ locations; results in 1-3 days
At-home self-collection. Finger prick or swab — no lab visit required. Results via secure portal within 10 business days.
Quest Diagnostics consumer-direct platform; results in 1-2 days; 2,100+ locations nationwide
Primarily uses Labcorp network; popular for hormone panels; higher individual test prices
Lab Codes
Proprietary codes used by each lab for this test.
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For informational purposes only
This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.