Serological test for antibodies against *Rubella virus* (German measles) in maternal serum/plasma
This blood test checks for immunity to rubella, a viral infection that can cause serious birth defects if a pregnant person gets it. It’s part of routine prenatal screening to ensure safety for both mother and baby.
["This test helps confirm if you have immunity to rubella before pregnancy or monitor immunity during pregnancy."]
Key facts at a glance
- LOINC
- 85674-0
- Short code
- Date serology test pre pregnancy Mother
- Synonyms
- Date serology test pre pregnancy Mother
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Critical range
- 0.5 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 for Pregnancy
Rubella is a contagious virus spread through respiratory droplets. If a pregnant person contracts rubella, it can lead to miscarriage, stillbirth, or birth defects like hearing loss, vision problems, or heart defects. This test helps identify if you’ve already built immunity through vaccination or past infection, reducing risks for your baby.
How the Test Works
A small blood sample is taken from your arm. The serum (liquid part of blood) is tested for rubella antibodies using an immunoassay method. This detects whether your immune system has recognized and fought off the virus before.
What to Expect Before the Test
No special preparation is needed. You may have a slight pinch or discomfort when the needle is inserted, but it usually goes quickly. If you’re pregnant, let your healthcare provider know if you have any concerns about blood draws.
What the Results Mean
Results are typically reported as either positive (indicating immunity or past infection) or negative (meaning you may not have immunity). A negative result doesn’t mean you’re at risk—it just means your body hasn’t produced antibodies yet, and you may need further testing or vaccination.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Rubella antibody screening
Frequently asked questions
How soon will I get my results?
What if my test is negative?
Does this test require fasting?
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 17, 2026. · Read our editorial policy