Table 1.

Phospholipase A2 receptor antibody tests and reference ranges offered by LabCorp and Quest Diagnostics

Clinical LaboratoryELISA Reference RangeImmunofluorescence Assay Reference Range
LabCorpNegative <14.0 RU/mlN/A
Borderline =14–19.9 RU/ml
Positive >19.9 RU/ml
Quest Diagnostics via Mayo Clinic/EuroimmunNegative <14 RU/mlNegative
Borderline >14 or =14–<20 RU/ml
Positive >20 or =20 RU/ml