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FACTOR VIII ANTIGEN
Number 158
CPT Code 83520
Alias FACTOR VIII ANTIGEN
Specimen Container Blue Top Citrate
Specimen Type Plasma Citrate
Turn Around Time 
Days Performed 
Reference Range 50-160 %
Alternate Specimen 
Volume 2 mL Plasma
Stability Ambient 4 Hours
Stability Refrigerated 8 Hours
Stability Frozen 
Patient Preparation 
Methodology 

Enzyme-linked immunoabsorbent assay (ELISA)

Limitations 
Rejection Criteria 
Additional Instructions 

Quantitate the amount of Factor VIII protein; NOT a measure of von Willebrand factor antigen

Performing Laboratory Reference Laboratory
TagsFACTOR 8, FVIII, NONFUNCTIONAL, F8

COVID-19 Testing Guidance

Primex Clinical Laboratories strives to provide clients with quality testing services to better support patient health. With the ongoing pandemic, COVID-19 testing has become high in demand yet testing supplies are limited.

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COVID-19 Testing Guidance

Primex Clinical Laboratories strives to provide clients with quality testing services to better support patient health. With the ongoing pandemic, COVID-19 testing has become high in demand yet testing supplies are limited.

Read More