FACTOR VII ACTIVITY

Specimen Required
Draw blood in a light blue 3.2% sodium citrate tube. See appendices for coagulation test collection instructions. Send 2.0 mL plasma (1.0 mL minimum) frozen in a screw-capped plastic vial.

Rejection Criteria
Serum, non-frozen or hemolyzed specimens

Methodology
Clotting

Stability
Room Temperature: 4 hours; Refrigerated: 4 hours; Frozen: 14 days

Reference Range
1-4 days:   28-104%  
5-29 days:   35-143%  
30-89 days:   42-138%  
90-179 days:   39-143%  
180-364 days:   47-127%  
1-5 years:   55-116%  
6 years:   52-120%  
7-9 years:   67-145%  
10-11 years:   71-163%  
12-13 years:   78-160%  
14-15 years:   74-180%  
16-17 years:   63-163%  
18 years and older:   80-181%  

Performed
Monday-Friday

Turnaround Time5-7 days
Test CodeF7AR
CPT-4 Code (s)
85230
LOINC Codes
3198-9

Warde
Medical
Laboratory