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Prolactin Vascular Region/Oral/Rectal Anatomic Structure Measurement (Prolactin Max Diameter)

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

This test measures the maximum diameter of blood vessels in specific regions (oral or rectal) related to prolactin levels, though it is not a standard blood or hormone test. It may be used in specialized evaluations of vascular changes linked to hormonal conditions.

Quick summary

["This test assesses vascular anatomy in areas affected by hormonal influences, though it is not a routine blood test."]

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

Key facts at a glance

LOINC
20290-3
Short code
PV Region orifice area DOP.Vmax+diam
Synonyms
PV Region orifice area DOP.Vmax+diam
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
0
Ref high
5
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-doppler-vmax-diameter-calculated
CPT
82378
SNOMED
394995008
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

What Is This Test Measuring?

This test evaluates the physical structure of blood vessels in the oral or rectal regions, specifically focusing on the maximum diameter of vascular areas associated with prolactin. Prolactin is a hormone, and its effects can sometimes influence blood vessel size in certain anatomical locations. This measurement may be part of a broader evaluation for conditions affecting vascular health or hormonal balance.

Why Might You Need This Test?

Your healthcare provider may recommend this test if they suspect hormonal imbalances or conditions affecting blood vessels in the oral or rectal areas. It could be part of a diagnostic process for conditions like vascular disorders, hormonal disorders, or other systemic health concerns that influence vascular anatomy.

How Is This Test Performed?

This test involves a specialized imaging or measurement technique to assess the vascular diameter in the specified regions. You may undergo a procedure such as ultrasound, Doppler imaging, or another vascular assessment. The test is typically non-invasive and does not require fasting or special preparation beyond standard instructions to ensure accuracy.

What Does the Result Mean?

The results indicate the maximum diameter of blood vessels in the oral or rectal regions. Abnormal measurements might suggest vascular changes due to hormonal imbalances, inflammation, or other underlying conditions. Your healthcare provider will interpret these results in the context of your overall health and symptoms.

Reference range

Non-smokers: <2.5 ng/mL; Smokers: <5.0 ng/mLN/A

Specimen: serum

No special preparation required. For PSA, avoid sexual activity for 24-48 hours before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Prolactin Vascular Diameter Assessment

Frequently asked questions

What Are Common Causes or Conditions Linked to This Test?
This test is not a standard diagnostic tool for most medical conditions. It may be used in specialized cases where vascular changes in the oral or rectal regions are suspected due to hormonal imbalances, such as prolactin-related disorders. Consult your healthcare provider for a detailed explanation of why this test was ordered and how the results may impact your care.
How Often Can I Expect to Have This Test Repeated?
The frequency of this test depends on your healthcare provider’s recommendations and the reason for the initial evaluation. If this test is part of an ongoing monitoring plan, your provider will let you know how often follow-up assessments are needed.
What Preparations Are Needed Before This Test?
There may be minimal preparation required. Follow any specific instructions your healthcare provider gives you, such as avoiding certain medications or dietary restrictions, to ensure accurate results. If you have any concerns, discuss them with your provider beforehand.
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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