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Antithrombin 3

eD-H Order Code

LAB311

Specimen Collection Information

Specimen Minimum Test Volume Container Special Handling
Blood

PEDI, PICU, or ICN draws refer to specimen collection job aid.

All other Coag tubes must be filled to the line on tube.

 Fill tube completely

Specimen Transport Temperature

Double spin, separate, and freeze

Reference Ranges / Critical Values

Assay Gender Age Range Normal Range Critical Values Units
Antithrombin All 15 Days – 1 Months 33 -63   %
    1 Months – 6 Months 29 -120   %
    6 Months – 1 Years 63 -122   %
    1 Years – 6 Years 61 -128   %
    6 Years – 11 Years 64 -136   %
    11 Years – 18 Years 69 -136   %
    18 Years – 150 Years ≥83   %

Specimen Stability

4 hours

Additional Specimen Instructions

1.8 mL Sodium Citrate tube filled to the line

OR

2.7 mL Sodium Citrate tube filled to the line

 

This test can be ordered as STAT if immediate results are needed.  When this test is ordered as ROUTINE all specimen received are batched and run once a week. 

 

Blue top tubes must be filled within 10% of stated volume. A discard tube must be used if a citrate tube is to be drawn using a winged blood collection set.  It is important to remove air from the blood collection set to ensure the proper volume is obtained in the coag tube.

 

If the patient has a known hematocrit >55%, please contact the coagulation lab for an adjusted collection tube before drawing the blood.

 

 

CPT(s)

85300

Performing Lab Section

Hematology