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Herpes Simplex Virus Antibody, IgA (Bronchial Lavage Fluid)

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

This test checks for IgA antibodies against herpes simplex virus (HSV) in fluid collected from your airways, which may help identify past or current respiratory infection.

Quick summary

["Detects IgA antibodies linked to HSV in airway samples for respiratory infection evaluation."]

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

Key facts at a glance

LOINC
44513-0
Short code
HSV Ag Bronch Ql IF
Synonyms
HSV Ag Bronch Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
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 This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like coughing, sore throat, or breathing difficulties that suggest a respiratory infection caused by HSV. It could also be used to confirm a diagnosis in certain clinical scenarios, such as suspected HSV pneumonia or recurrent respiratory infections.

What to Expect Before the Test

No special preparation is needed. You may have a bronchoscopy procedure where fluid is collected from your airways under sedation. You might experience mild discomfort, but it’s generally safe and well-tolerated.

What the Test Results Mean

Positive results indicate the presence of IgA antibodies against HSV, suggesting past infection or ongoing immune response. Negative results mean no detectable antibodies were found in this sample. Interpretation depends on clinical context and symptoms.

Common Causes of Positive Results

Positive results may occur if you’ve had HSV infection before, or if the virus is reactivating in your respiratory tract. This test alone cannot confirm active infection without additional clinical findings or viral testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgA HSV Antibody (Bronchial Wash)

Frequently asked questions

How often should I get this test?
This test is typically ordered as needed based on symptoms or clinical suspicion. It’s not a routine screening test for HSV. Follow your healthcare provider’s guidance for frequency.
What does a positive result mean for my health?
A positive result suggests HSV exposure or infection but does not indicate the severity or current activity of the virus. It may prompt further evaluation, including antiviral treatment or monitoring for complications.
Can I take antiviral medication before the test?
Yes, if prescribed by your doctor, antiviral medication does not interfere with this antibody test. However, inform your provider before the test if you’re taking any medications to avoid potential interactions.
  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