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Prostate Volume Measurement via High-Resolution Ultrasound (HWL)

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

This test measures the size of your prostate gland using ultrasound imaging, often performed during a digital rectal exam or as part of a prostate-specific antigen (PSA) evaluation.

Quick summary

["Assessing prostate size helps guide further testing or treatment options."]

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

Key facts at a glance

LOINC
15308-0
Short code
Volume Prostate from HWL
Synonyms
Volume Prostate from HWL
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-derived-hwl
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Doctors may order prostate volume measurement to monitor prostate growth, evaluate symptoms like frequent urination or difficulty urinating, or assess risk for conditions like benign prostatic hyperplasia (BPH) or prostate cancer. It can also help determine if additional tests or treatments are needed.

How Is the Test Performed?

A healthcare provider uses ultrasound technology to create detailed images of your prostate. You’ll likely lie on your side or back, and the provider may insert a small, lubricated probe into your rectum to capture clear images. The procedure is quick and generally painless.

What Should You Expect Before or After the Test?

No special preparation is usually needed, but you may be asked to empty your bladder beforehand. After the test, you may feel mild discomfort or pressure in your lower abdomen or rectum. Rest and drink plenty of fluids afterward.

What Do the Results Mean?

Results are expressed in cubic centimeters (cc) or milliliters (mL). A larger prostate volume may suggest conditions like BPH, while very small volumes could raise concerns about potential issues. Your doctor will interpret results in the context of your symptoms and overall health.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Prostate Volume

Frequently asked questions

How often will I need this test?
The frequency depends on your symptoms, medical history, and doctor’s recommendations. Regular monitoring may be advised if you have BPH, prostate cancer risk factors, or other prostate-related concerns.
Can I avoid this test if I don’t have symptoms?
Not always. Even without symptoms, your doctor might recommend prostate volume checks if you’re at higher risk for prostate issues (e.g., family history of prostate cancer) or if you’re undergoing other prostate-related screenings.
Will this test affect my PSA levels?
No direct link exists between prostate volume and PSA levels, but both tests are often ordered together. Larger prostates may slightly dilute PSA, but results are interpreted based on clinical context rather than absolute numbers.
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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