Factor XI, Activity FAC11
Method(s) | Clot Detection |
---|---|
Specimen Required | |
Collect | One adequately filled 3.0 mL light blue (sodium citrate) top tube. |
Transport | **TIME SENSITIVE** For specimens that cannot be shipped to the laboratory to arrive within 4 hours of collection, see Collection and Processing of Coagulation Specimens information (link below). |
Remarks | Draw blood into citrate (light blue) top tube filled to the proper level (1 part anticoagulant to 9 parts blood). Invert tube 3-4 times to avoid clotting. |
Stability | Ambient, Refrigerated: 4 hours; Frozen platelet-poor plasma: 2 weeks |
Unacceptable Conditions | Specimens that are clotted, hemolyzed, collected in the wrong tube, less than 90% filled, exceed stability limits, or non-frozen plasma are unacceptable for testing. |
Schedule | Thur |
Billing Code | 4010116 |
CPTCode | 85270 |
Notes | Anticoagulant therapy may interfere with results. |
Preferred Specimen Collection Device(s) | |
Reference Interval | |
62-141 % |