Testosterone, Serum Concentration
This test measures the amount of testosterone, a key male sex hormone, in your blood serum. It can help assess hormone balance, fertility, or symptoms related to hormonal changes.
["Testosterone levels help diagnose hormonal imbalances and guide treatment for conditions like low testosterone or related symptoms."]
Key facts at a glance
- LOINC
- 15094-6
- Short code
- Testost Ur-sCnc
- Synonyms
- Testost Ur-sCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test to evaluate symptoms such as low libido, fatigue, muscle loss, or irregular menstrual cycles in men or women. It can also be used to diagnose conditions like hypogonadism, Cushing’s syndrome, or polycystic ovary syndrome (PCOS).
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it involves a blood draw. Avoid smoking or consuming alcohol for a few hours beforehand. Let your provider know about any medications you’re taking, as some may affect results.
What Happens During the Test?
A healthcare professional will draw blood from a vein in your arm. The process is quick and typically causes only mild discomfort. The blood sample is then sent to a lab for analysis.
What Do the Results Mean?
Results are compared to a general reference range, but individual ranges can vary based on age, sex, and health status. High or low levels may indicate underlying medical conditions that need further evaluation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Serum Testosterone Level
Frequently asked questions
High testosterone levels may be linked to conditions like Cushing’s syndrome or androgen excess, while low levels could signal hypogonadism, adrenal insufficiency, or other hormonal disorders. Regular monitoring is important for patients on long-term hormone therapy.
How long does it take to get my results? Most labs provide results within 1–3 business days, but timing can vary. Follow up with your provider if you have questions about your results before receiving them.
Does this test affect my medications? Some medications, like certain steroids or blood pressure drugs, may influence testosterone levels. Let your provider know about all medications, supplements, or herbal products you’re taking.
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy