A
5200 Harry Hines Blvd.
,
Dallas
,
TX
75235
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General Information
Alias: Prothrombin Activity
Performed: Mon-Fri, 0700-1530
Turn Around Time: 1-3 days
CPT Codes: 85210
Performed By: Hematology
Notes: Results not affected by heparin (UFH or LMWH) up to 1.0 U/mL, hemoglobin up to 500 mg/dL, triglycerides up to 1000 mg/dL and bilirubin up to 30 mg/dL.
Clinical Utility: Quantitative determination of Factor II activity is utilized to aid in in the diagnosis of congenital or acquired Factor II deficiency. Congenital Factor II deficiency is rare and causes a mild to moderate bleeding tendency.
Unacceptable Conditions: QNS, clotted, severely hemolyzed, icteric, lipemic, refrigerated, or on ice
Components
| Name |
Method |
Sex |
Age Range |
Ref. Range Low |
Ref. Range High |
Units |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
0 Minutes - Day 1 |
26 |
70 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
Day 1 - Day 4 |
26 |
70 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
Day 5 - Day 29 |
33 |
93 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
Day 30 - Day 89 |
34 |
102 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
Day 90 - Day 179 |
45 |
105 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
Day 180 - Day 364 |
60 |
116 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
1 Year - 5 Years |
71 |
116 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
6 Years - 10 Years |
67 |
107 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
11 Years - 16 Years |
61 |
104 |
% |
| Factor II Activity |
Prothrombin Clot-Based Assay |
|
17 Years - 150 Years |
78 |
146 |
% |
Specimen Requirements
| Type |
Container |
Volume |
Units |
Collection / Delivery |
Storage / Transport |
Off Campus |
| Blood |
Blue Na Citrate, 3mL |
Draw to fill line |
|
Send to Lab within 3 hrs of collection |
Room Temperature |
Deliver to Logistics Hematology Lab via STAT courier
|