Ordering Recommendation

Order to detect and subtype antithrombin deficiency.

Methodology

Chromogenic Assay/Microlatex Particle-Mediated Immunoassay

Performed

Sun-Sat

Reported

1-2 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Light Blue (Sodium Citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.

Specimen Preparation

Transfer 2 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

Test Number
Components
Reference Interval
  Antithrombin, Enzymatic (Activity)
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 yeas 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

  Antithrombin Antigen 82-136%

Interpretive Data



Compliance Category

FDA

Note

Hotline History

N/A

CPT Codes

85300; 85301

Components

Component Test Code* Component Chart Name LOINC
0030010 Antithrombin, Enzymatic (Activity) 27811-9
0030015 Antithrombin Antigen 27812-7
* 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 Deficiency Profile
  • Antithrombin III Profile
  • AT 3
  • AT III
  • AT III Profile
  • Functional Antithrombin III
Antithrombin Panel