Open AccessFalse‐positive semiquantitative immunochromatography assays for procalcitonin in three patients with rheumatoid arthritis—A case series
Author(s) -
Sato Hiroe,
Ito Satoshi,
Nakazono Kiyoshi,
Kurosawa Yoichi,
Nozawa Yukiko,
Nakatsue Takeshi,
Wada Yoko,
Kuroda Takeshi,
Suzuki Yoshiki,
Nakano Masaaki,
Narita Ichiei
Publication year - 2020
Publication title -
clinical case reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 9
ISSN - 2050-0904
DOI - 10.1002/ccr3.2968
Subject(s) - medicine , procalcitonin , rheumatoid arthritis , rheumatoid factor , immunology , gastroenterology , sepsis
We report three rheumatoid arthritis (RA) patients with false‐positive procalcitonin (PCT) based on semiquantitative immunochromatography assays without infection, but who had negative PCT assay results based on quantitative methods. Immunochromatography was useful for screening; however, other heterophilic antibodies rather than rheumatoid factor were possible to affect, especially in RA flare.