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Rubella Virus Status (Serum/Plasma)

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

This test checks for immunity to rubella (German measles), a viral infection that can cause serious birth defects if a pregnant person is exposed.

Quick summary

["Determines whether you have immunity or need vaccination to protect against rubella."]

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

Key facts at a glance

LOINC
55278-6
Short code
RUBV status
Synonyms
RUBV status
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Rubella is highly contagious and can lead to severe complications, including miscarriage or birth defects in unvaccinated pregnant women. This test helps ensure you’re protected, especially if you’re planning pregnancy.

How the Test Works

Blood is drawn and tested for antibodies to rubella virus. If antibodies are present, your body has already fought off the virus or been vaccinated. If not, you may not be immune.

What to Expect Before the Test

No special preparation is needed. Wear comfortable clothing for easy blood draw. Avoid alcohol for 24 hours before testing if instructed by your provider.

Possible Results and Next Steps

A positive result means you have immunity. A negative result means you may need vaccination or further testing. Your healthcare provider will guide you on the next steps based on your medical history and plans.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Rubella Antibody Test

Frequently asked questions

What does a positive result mean?
A positive result indicates you have rubella antibodies, meaning your body has either fought off the virus or you’ve been vaccinated. You likely have immunity and do not need vaccination.
What if my result is negative?
A negative result means you may not have immunity. Your healthcare provider will discuss whether vaccination is recommended, especially if you’re planning pregnancy or have close contact with someone who may be infected.
Can I get rubella from a blood test?
No, rubella is spread through respiratory droplets or direct contact with infected saliva or nasal secretions—not through blood. Blood tests only detect antibodies, not the virus itself.
  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