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RUBELLA ANTIBODY

Synonym(s):

Rubella IgG Ab, Rubella IgM Ab

Lab Section Category

Description

​Rubella IgM Antibody (anti-Rubella IgM)

Rubella IgG Antibody (anti-Rubella IgG)

Indications

Specimen Required

​3 – 5 mL plain blood.

(a) To diagnose acute rubella infection, send an acute serum for Rubella IgM antibody, and a convalescent serum taken 10-14 days later for Rubella IgM and IgG antibody.

(b) To evaluate a pregnant contact of a case of rubella, send first sample immediately after exposure and second sample four weeks after exposure for Rubella IgM antibody.

(c) To determine the immunity status to rubella, send a single sample for Rubella IgG antibody.

Storage and Transport

​Refrigerate samples if delay in transporting to laboratory is anticipated. Do not freeze.

Method

​Anti-Rubella IgM : Enzyme Immunoassay

Anti-Rubella IgG : Chemiluminescent Microparticle Immunoassay

Test Results

Acute infection: Rubella IgM antibody present or seroconversion of Rubella IgM or IgG.

Immunity status: Serum having Rubella IgG antibody ≥ 15 IU/mL

Reference Interval / Value

Turnaround Time

​Anti-Rubella IgM : <1 - 4 days

Anti-Rubella IgG : <1 - 7 days

Day(s) Test Set up

​Anti-Rubella IgM : Tuesday and Friday

Anti-Rubella IgG : Thursday

Remarks

Change History Notes

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