0030010
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Antithrombin, Enzymatic (Activity)

AT3
Example Reports
Low
Normal

Ordering Recommendation

Recommended test to detect antithrombin deficiency.

New York DOH Approval Status

This test is New York state 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

Methodology

Chromogenic Assay

Performed

Sun-Sat

Reported

1-2 days

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

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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)