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Table 1 Reference ranges to evaluate CMV IgG and IgM, IgG avidity

From: Cytomegalovirus seronegativity rate in pregnant women and primary cytomegalovirus infection during pregnancy in rural Germany

 

Value (concentration)

Evaluation

CMV IgGa

< 12.0 U/ml

Negative

12.0–14.0 U/ml

Borderline

> 14.0 U/ml

Positive

CMV IgMb

< 18.0 U/ml

Negative

18.0–22.0 U/ml

Borderline

> 22.0 U/ml

Positive

  1. CMV: Cytomegalovirus; IgG: Immunglobuline G, IgM: Immunglobuline M, U/ml: Units/Milliliter, Method: a Chemilumineszenz-Assay (CLIA), b Chemilumineszenz-Assay (CLIA),
  2. a Cytomegalovirus IgG Avidity (CLIA) Reference range: Low avidity: < 45.0%; grey zone: 45.0-54.9%; high avidity: ≥ 55.0%