Abstracts tagged "Immunoglobulin (IG) and laboratory tests"

Abstract Number: 2061 • 2014 ACR/ARHP Annual Meeting
Unexpectedly High Prevalence of Immunoglobulin Deficiency in Fibromyalgia
Xavier Caro and Earl Winter, Fibromyalgia Research and Treatment Center, Northridge, CA
Background/Purpose: It has recently been shown that Fibromyalgia (FM) is commonly associated with clinical evidence of neuropathic pain language, laboratory evidence of small fiber…
Abstract Number: 2527 • 2012 ACR/ARHP Annual Meeting
Prozone Phenomenon Leads to Low IgG4 Concentrations in IgG4-Related Disease
Arezou Khosroshahi¹, Lynn A. Cheryk², Mollie Carruthers¹, Judith A. Edwards², Donald B. Bloch³ and John H. Stone¹, ¹Rheumatology, Massachusetts General Hospital, Boston, MA, ²Mayo Medical Laboratories, Mayo Medical Laboratories, Andover, ³Rheumatology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
Background/Purpose: IgG4-related disease (IgG4-RD) is frequently associated with elevations in serum IgG4 concentration. However, the frequency of serum IgG4 elevation varies in published series from…

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