Rheumatoid factor can interfere with cystatin C measurement.
Lamb
Edmund
E
Stowe
Helen
H
D002624:Chemistry, Clinical / Q000379:methods*; D055316:Cystatin C; D015891:Cystatins / Q000097:blood*; D006801:Humans; D007118:Immunoassay / Q000379:methods; D015203:Reproducibility of Results; D012217:Rheumatoid Factor / Q000097:blood*
C525030:CST3 protein, human; D055316:Cystatin C; D015891:Cystatins; D012217:Rheumatoid Factor