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HelpCatalog ID Factor VIII Factor VIII
CPOE Test Name
Factor VIII Level
Synonyms
Antihemophilic Factor A
Specimen Type
Plasma
Specimen Requirements
Light Blue Top (Sodium Citrate) tube; 2.7 mL blood
Storage and Transport
Room temperature. Transport to the lab immediately.
Special Instructions
Always allow blue top/citrate tubes to fill completely.
Causes for Rejection
Tube improperly filled especially underfilling;
specimen clotted;hemolysis;
improper labeling;
insufficient quantity;
delay in transport
Reference Range
50 – 150%
Critical Values
<3 %
Interpretation
Elevated: Acute or chronic illness, patient on oral contraceptives or during pregnancy. Decreased in Hemopholia A.
Turn Around Time
1 hour
Performing Lab
Core Laboratory BI 2023 721-2120
Test Consists
Quantification of factor activity level
CPT / HCPCS Code
85240