Rubella: Avidity test for Rubella virus IgG in serum by ELISA

Last updated on 11-7-2023 by Lee Mbambu Maswaku


  • Quantitative (% relative avidity index (% RAI)) and qualitative (high or low avidity)
  • This test is performed under accreditation from BELAC, ISO15189.

Purpose of the test

Determination of IgG antibody avidity against rubella virus in serum by ELISA.

Criteria for conducting this test under the reference activities

This test is performed only for samples that are IgM and IgG ELISA positive to rule out a recent infection (< 4-6 weeks ago).

ATTENTION: If you suspect a case of congenital Rubella, please send your sample to the NRC for Congenital Infections

Unacceptable demands

  • No clinical indications of Rubella infection.
  • Samples that are rubella IgG negative or equivocal.

Instructions for samples

  • Type: Serum
  • Sample collection: at least 7 days after the onset of the rash  
  • Storage conditions: Store samples at 4°C before shipment
  • Minimum volume: 0.5 ml

Instructions for transportation

Ship in a triple-wrapped package at room temperature.

Turn around time

4 business days

Communication of test results

The result can be communicated via mail, fax, email and eHealth.


Pathogen info

Rubella virus


Is the analysis accredited?

Materials and methods

Method reference: 
SOP 13/3/91/N

Turnaround time and time slots

Turnaround time: 
4 days

Service in charge of the analysis

Contact person(s)

Contact email

Analysis categories


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