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Rabies Virus IgG Antibody, Virus-Specific Immunoglobulin Titration (Serum/Plasma)

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

This test measures the level of antibodies your body produces in response to rabies virus exposure. It helps determine if you’ve been vaccinated or naturally exposed to the virus.

Quick summary

["Checks for immunity against rabies after vaccination or possible exposure."]

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

Key facts at a glance

LOINC
99136-4
Short code
RABV IgM Titr Spec IF
Synonyms
RABV IgM Titr Spec 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
CPT
82784
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 Matters

Rabies is a deadly virus spread through animal bites or saliva. If you’ve had a rabies vaccine series or suspect exposure, this test confirms whether your immune system is protected.

What to Expect Before the Test

You’ll provide a blood sample (usually from your arm) in a lab. No special preparation is needed, but tell your doctor if you’re on blood-thinning medication.

What the Results Mean

High antibody levels suggest immunity from vaccination or prior exposure. Low or absent levels may mean you need booster shots or further evaluation.

Common Reasons for Testing

Doctors order this test after rabies vaccination series completion, post-exposure prophylaxis (PEP), or if you’ve had animal bites in high-risk areas.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Rabies Antibody Test

Frequently asked questions

How long does it take to get results from this test?
Results typically arrive within 3–7 business days, depending on lab processing times. Your healthcare provider will discuss them with you.
Can I drink or eat before this blood test?
No special diet is required, but avoid heavy meals 2 hours before your appointment to ensure comfort during the draw.
What if my antibody levels are low?
If levels are low, your doctor may recommend a booster vaccine or further evaluation if you suspect exposure. Follow-up depends on your vaccination history and risk factors.
  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