Skip to content

Human Immunodeficiency Virus (HIV) Genotype Testing for Antigen Detection (5th Generation)

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

This test detects specific proteins (antigens) produced by the HIV virus and determines its genetic type to guide treatment decisions.

Quick summary

["Helps doctors choose the most effective HIV treatment based on your virus type."]

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

Key facts at a glance

LOINC
82380-7
Short code
HCV Gentyp 1 NS5a Mut Det Islt
Synonyms
HCV Gentyp 1 NS5a Mut Det Islt
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
genotyping
CPT
86803
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 This Test Measures

This test identifies the presence of HIV antigens (like p24 protein) and classifies the virus into one of several genotypes. Genotype testing helps tailor antiviral therapy to your specific virus strain, improving treatment effectiveness.

Why It Matters for Treatment

Knowing your HIV genotype helps your healthcare provider select medications that are most likely to work against your virus. This reduces the risk of resistance and improves long-term health outcomes.

Sample Collection and Preparation

A blood sample is drawn from your arm. The sample is processed to detect HIV antigens and genetic material (RNA) for genotyping analysis.

When You Might Need This Test

Your doctor may recommend this test if you have early-stage HIV, if you’re starting new HIV treatment, or if resistance to previous medications is suspected.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Genotype testing is critical for managing HIV because it ensures your treatment targets the correct virus strain, preventing resistance and optimizing viral suppression. It’s especially important for patients who have failed previous treatments or are considering highly active antiretroviral therapy (HAART).

Short name

HIV Genotype Antigen Test

Frequently asked questions

What does a positive result mean?
A positive result confirms HIV infection and identifies the specific genetic type of the virus. This information helps your doctor choose the best medications to control your infection.
How long does it take to get results?
Results are typically available within 1 to 2 weeks, depending on lab processing times. Your doctor will discuss the findings with you during your follow-up visit.
Can this test be done at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. Home testing kits are not available for this specific genotype antigen test.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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