Anti-Thrombin 3 (ATIII), Functional Activity
Order Name
THROM3 FUN
Test Number: 1501825
Revision Date 05/14/2025
Test Number: 1501825
Revision Date 05/14/2025
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Anti-Thrombin 3 (ATIII), Functional Activity
|
Chromogenic | 27811-9 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 2.7 mL | Whole Blood | Sodium Citrate 3.2% (Blue Top) | Room Temperature |
| Alternate 1 | 1.5 mL | Double Spun Plasma | Sodium Citrate 3.2% (Blue Top) | Frozen |
| Instructions | Please indicate anticoagulant therapy. Each 2.7mL Sodium Citrate 3.2% (Blue Top) tube must be filled to the proper level, no hemolysis. Improperly filled tubes can give erroneous results. Whole blood must be transported to lab immediately. If testing cannot be started within 4 hours of collection the specimen must be double spun then 1.5 mL plasma aliquot from each tube into individual plastic aliquot tubes and freeze. Do not pool aliquots together! Do not thaw. |
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| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Tues, Thurs |
| Expected TAT | 1-7 Days |
| Clinical Use | Antithrombin III is used to assess thrombotic risk. |
| CPT Code(s) | 85300 |
| Internal Comments | Tue Please indicate anticoagulant therapy. Each 2.7mL Sodium Citrate 3.2% (Blue Top) tube must be filled to the proper level, no hemolysis. Improperly filled tubes can give erroneous results. Whole blood must be transported to lab immediately. If testing cannot be started within 4 hours of collection the specimen must be double spun then 1.5 mL plasma aliquot from each tube into individual plastic aliquot tubes and freeze. |
| Lab Section | Coagulation |