Department of Laboratory Medicine
University of Washington
 
Clinical assay interference and limitations

Methodology: Stago STA LIA vWF Antigen assay

The presence of rheumatoid factor may lead to an over-estimation of the vWF level. The extremely rare presence of anti-bovine albumin or anti-rabbit antibodies in certain subjects may lead to an over-estimation of vWF level. Like all antigenic tests, the vWF assay cannot detect the rare type 2 von Willebrand disease variants whose level of vWFAg is normal.

Reference: Stago STA Immuno-turbidometric vWF antigen assay package insert, 23327 ­ Revised November 1997/3

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Created: February 28, 2002
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