Ordering Recommendation
Recommended test to detect antithrombin deficiency.
Mnemonic
AT3
Methodology
Chromogenic Assay
Performed
Sun-Sat
Reported
1-2 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.
Specimen Preparation
Transfer 1.5 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Unacceptable Conditions
Serum. EDTA plasma , clotted or hemolyzed specimens.
Remarks
Stability
Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 1 month
Reference Interval
Age | Reference Interval |
---|---|
1-4 days | 39-87% |
5-29 days | 41-93% |
30-89 days | 48-108% |
90-179 days | 73-121% |
180-364 days | 84-124% |
1-5 years | 82-139% |
6 years | 90-131% |
7-9 years | 90-135% |
10-11 years | 90-134% |
12-13 years | 90-132% |
14-15 years | 90-131% |
16-17 years | 87-131% |
18 years and older | 76-128% |
Interpretive Data
Compliance Category
FDA
Note
Hotline History
N/A
CPT Codes
85300
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0030010 | Antithrombin, Enzymatic (Activity) | 27811-9 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- Antithrombin Activity, Plasma
- Antithrombin III Activity
- Antithrombin III, Functional
- AT III Activity
- AT III Activity/Functional
- AT3 Activity
- AT3 Activity/Functional
Antithrombin, Enzymatic (Activity)