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Clinical Laboratory Test: What You Need to Know About Testing and Sample Collection

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of androstenedione, a hormone that produces testosterone, in your urine collected over 24 hours.

Quick summary

{"Androstenedione is a hormone made by your adrenal glands, ovaries, or testicles","This test helps diagnose conditions causing excess male hormones","You will need to collect all urine for 24 hours in a special container","Common conditions tested include PCOS and adrenal disorders"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
34239-4
Short code
ANDRO24
Synonyms
Androst 24h Ur-sCnc
Category
chemistry
Sample
urine
Container
24-hour urine collection container (3L) with or without preservative (e.g., boric acid or thymol)
Units
N/A
Ref low
2
Ref high
10
Fasting
false
Population
adult
Sex
all
Age range
1–100 years
Method
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) or Immunoassay
CPT
82157
SNOMED
167068007
Specimen volume
10 mL aliquot from a well-mixed 24-hour urine collection
Stability
Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C or below): 30 days
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
48–120 hours
Order
routine

This test is a laboratory analysis performed on a sample collected from your body, such as blood, urine, or another specimen. Your healthcare provider uses the results to help diagnose a condition, monitor an ongoing illness, or screen for health problems before symptoms appear.

The androstenedione test measures how much of this hormone is in your urine over a 24-hour period. Androstenedione is a steroid hormone produced by your adrenal glands (above your kidneys), ovaries (in women), or testicles (in men). It serves as a building block for testosterone, the primary male sex hormone.

Your doctor may order this test to confirm or rule out a suspected condition, check how well an organ such as the kidneys, liver, or thyroid is working, monitor how well a treatment is working, or complete a routine checkup to detect potential health issues early.

Your doctor may order this test if you show signs of having too much male hormone (androgen), such as: irregular menstrual periods, excessive hair growth (hirsutism), acne, or male-pattern baldness in women. It can also help evaluate adrenal gland function or detect certain tumors.

Sample collection depends on the type of test ordered. For a blood sample, a trained professional will clean the site, draw blood from a vein in your arm, and apply a bandage afterward. For a urine sample, you will receive a sterile container and instructions for a clean-catch midstream collection. Follow any preparation instructions from your provider, such as fasting, and mention any medications you take.

You will receive a special container from your healthcare provider. On the morning of collection, urinate into the toilet as usual. For the next 24 hours, collect ALL urine in the container. Keep the container refrigerated or in a cool place. Return the container to the lab as instructed, typically within 24-48 hours of completing the collection.

This test is very safe. If your blood is drawn, you may feel a brief sting when the needle is inserted, and mild bruising or soreness at the site can last a day or two. Serious complications such as infection or excessive bleeding are rare. Providing a urine or other noninvasive sample carries essentially no risk. Contact your provider if you have persistent bleeding, increasing pain, or signs of infection.

This test has no physical risks. The main challenge is accurately collecting all urine for 24 hours. Inform your doctor about any medications or supplements you take, as some can affect test results.

Reference range

Adult Male: 2.0-10.0 nmol/24h; Adult Female: 1.0-8.0 nmol/24h; Pediatric values vary by age and Tanner stageN/A

Specimen: urine

No special preparation required. Patient should maintain normal dietary and fluid intake. Note any medications such as corticosteroids, oral contraceptives, or hormonal supplements as these may affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated androstenedione levels may indicate polycystic ovary syndrome (PCOS), congenital adrenal hyperplasia, adrenal tumors, or ovarian tumors. Low levels may suggest adrenal insufficiency or ovarian failure. Results help your doctor diagnose the cause of hormonal symptoms and guide appropriate treatment.

Frequently asked questions

Do I need to fast before the test?
No fasting is typically required for this urine test. However, follow your doctor's specific instructions regarding medications and diet.
Can I exercise during the collection period?
Yes, you can continue normal activities. Just remember to collect all urine, including after exercise.
What happens if I miss a urine sample during collection?
If you forget to collect a urine sample, note the time and continue collecting. Tell the lab staff when you return the container so they can note any incomplete collection.
How long will it take to get results?
Results are usually available within a few days to a week, depending on the laboratory.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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