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Factor IX Assay

Centralized Core Laboratory - : Hematology

Test ID :
Test Workstation :
Specimen Type:
Tube Type:
Blue top (sodium citrate) tube
Collection Volume:
2.7 mL (minimum 1.8 mL) Must use appropriate sodium citrate tube based on volume of blood drawn (1.8 mL or 2.7 mL)
Cause for Rejection:
Sample hemolyzed, clotted, diluted with IV fluid; contam with heparin, improperly filled; received > 4 hrs after drawn
Whole Blood Ambient
Daily (0700-1500)
Special Instructions:
Indicate the time replacement therapy was administered, amount & type of therapy given, whether the specimen was drawn pretreatment or posttreatment and the time drawn. Indicate if a specimen has been drawn from an arterial line or a line rinsed with heparin. If collected at an offsite location, send Whole Blood by a STAT Courier to Akron Childrens Lab. Must be received within 4 hours.
4 hours
Additional Info:
Reference range: 60-135%
CPT Code:
Antihemophilic Factor B; Christmas Disease
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