91101 Factor XI Activity

Specimen:

Collect:

One 4 mL Blue Top (Na Citrate)

Submit:

2 mL (Min:1 mL) Plasma in 4 mL Blue Top (Na Citrate). Submit Frozen. Submit in a Standard Transport Tube.

Special Handling:

Avoid Repeated Freeze/Thaw Cycles
Critical Frozen
Separate aliquot required for each frozen test ordered
Transfer 2 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)
Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.

Rejection Criteria:

Hemolyzed specimens
Serum
Specimen not submitted frozen

Stability:

Ambient: 4 Hour(s); Refrigerated: 4 Hour(s); Frozen: 2 Week(s); Incubated: Unacceptable

Methodology:

Clotting

Performed:

Mon-Fri

Reported:

2-5 Day(s)

CPT Codes:

85270

Interpretive Data:

General Reference Range : 56-153 %

Male Reference Ranges
0 - 3 day(s)	:	10-66 %
3 day(s) - 4 week(s)	:	23-87 %
4 week(s) - 2 month(s)	:	27-79 %
2 - 6 month(s)	:	41-97 %
6 month(s) - 1 year(s)	:	38-134 %
1 - 5 year(s)	:	56-150 %
5 - 6 year(s)	:	52-120 %
6 - 9 year(s)	:	70-138 %
9 - 11 year(s)	:	66-137 %
11 - 13 year(s)	:	68-138 %
13 - 15 year(s)	:	57-129 %
15 - 17 year(s)	:	65-159 %
17 - 150 year(s)	:	56-153 %

Female Reference Ranges
0 - 3 day(s)	:	10-66 %
3 day(s) - 4 week(s)	:	23-87 %
4 week(s) - 2 month(s)	:	27-79 %
2 - 6 month(s)	:	41-97 %
6 month(s) - 1 year(s)	:	38-134 %
1 - 5 year(s)	:	56-150 %
5 - 6 year(s)	:	52-120 %
6 - 9 year(s)	:	70-138 %
9 - 11 year(s)	:	66-137 %
11 - 13 year(s)	:	68-138 %
13 - 15 year(s)	:	57-129 %
15 - 17 year(s)	:	65-159 %
17 - 150 year(s)	:	56-153 %