PMID- 8956370 OWN - NLM STAT- MEDLINE DCOM- 19970312 LR - 20061115 IS - 1081-650X (Print) IS - 1081-650X (Linking) VI - 108 IP - 6 DP - 1996 Nov TI - Antibodies to beta 2 glycoprotein I: standardized immunoassay and a reference interval for healthy controls. PG - 467-72 AB - Patients with antiphospholipid syndrome (APS) demonstrate an antibody reactivity with beta 2 glycoprotein I (beta 2 GPI) independent of the anionic phospholipids that previously had been believed to be the relevant autoantigens associated with this syndrome. Immunoassays for IgG anti-beta 2 GPI have, however, suffered from a lack of standardization. In this article, we describe an assay based on reference standards that we developed recently. The assay exhibits excellent linearity, with regard to both application of the standards and dilution of out-of-range specimens. Precision was assessed both within the between run and was judged to be satisfactory. A reference interval was developed on the basis of a control group consisting of 111 men and 93 women, yielding a range of 0-19 standard IgG anti-beta 2 GPI units (SGU) for the ninety-fifth percentile of values. These data suggest that this standardized anti-beta 2 GPI assay may be useful in the clinical diagnostic laboratory. FAU - Najmey, S S AU - Najmey SS AD - Department of Medicine, Seton Hall University School of Graduate Medical Education, St. Joseph's Hospital and Medical Center, Paterson, NJ 07503, USA. FAU - Erickson, E N Jr AU - Erickson EN Jr FAU - Keil, L B AU - Keil LB FAU - DeBari, V A AU - DeBari VA LA - eng PT - Journal Article PL - United States TA - Proc Assoc Am Physicians JT - Proceedings of the Association of American Physicians JID - 9514310 RN - 0 (Autoantibodies) RN - 0 (Glycoproteins) RN - 0 (beta 2-Glycoprotein I) SB - IM MH - Antiphospholipid Syndrome/blood/*immunology MH - Autoantibodies/*analysis/blood/immunology MH - Female MH - Glycoproteins/*immunology MH - Humans MH - Immunoassay/*standards MH - Male MH - Sensitivity and Specificity MH - beta 2-Glycoprotein I EDAT- 1996/11/01 00:00 MHDA- 2001/03/28 10:01 CRDT- 1996/11/01 00:00 PHST- 1996/11/01 00:00 [pubmed] PHST- 2001/03/28 10:01 [medline] PHST- 1996/11/01 00:00 [entrez] PST - ppublish SO - Proc Assoc Am Physicians. 1996 Nov;108(6):467-72.