Serum Prolactin Level with 15-Hour Prolactin Time-Triggered HIV Serology (Screening)
This test measures your prolactin hormone level in your blood after a 15-hour fast and checks for HIV antibodies in your serum. Prolactin helps regulate hormones like estrogen and milk production, while HIV screening helps detect the virus early.
["Check for hormone imbalances and HIV infection with a single blood draw after fasting for 15 hours."]
Key facts at a glance
- LOINC
- 44926-4
- Short code
- Prolactin 1.5h p TRH IV SerPl-aCnc
- Synonyms
- Prolactin 1.5h p TRH IV SerPl-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0.8
- Ref high
- 1.2
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85610
- SNOMED
- 396252006
- 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?
Your healthcare provider may order this test if you have symptoms like unexplained weight changes, breast tenderness, or irregular menstrual periods. It may also be used in research or specialized clinical settings to evaluate prolactin-related conditions or HIV exposure risk.
What to Expect Before the Test
You’ll need to fast for 15 hours before the test, meaning no food or drink (except water) after midnight. Wear comfortable clothing and plan to rest during the procedure. Bring any medications you take daily with you.
What Happens During the Test?
A healthcare professional will draw blood from a vein in your arm. The sample will be split for two tests: one for prolactin levels and another for HIV antibodies. The blood will be processed and sent to a lab for analysis.
What Are the Possible Results?
Results for prolactin will show your hormone level compared to typical ranges. HIV screening results will indicate whether antibodies are present (positive) or not (negative). Follow-up testing may be needed if results are abnormal.
Reference range
INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Prolactin and HIV Testing
Short name
Prolactin & HIV Screening Profile (15h)
Frequently asked questions
Why might elevated prolactin levels be important?
How long does it take to get results?
Can I eat or drink before the test?
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