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Antithrombin

eDH Procedure Code(s)

LAB311 Antithrombin
LAB2165 Thrombosis/Antiphospholipid Screen
LAB2169 Thrombosis/Antiphospholipid Panel —LAB ONLY

Order Questions

LAB2165 Thrombosis/Antiphospholipid Screen
  • Please Select desired testing (Select one)
  • Does the patient have a history of thrombosis?
  • Is there a FAMILY history of thrombosis (e.g. blood clots in first-degree relatives)?
  • Is Patient Pregnant?
  • Is Patient on Warfarin?
  • Is Patient on Direct Oral Anticoagulant (DOAC)?
  • Please provide reason for testing -

Collection Information

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 blood 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.

Specimen Information

Specimen Type Specimen Source Acceptable Containers Minimum Test Volume (mL)
Blood Blood, Venous BluCit-F 1.0
Blood Blood, Venous OrgCit-F 0.5
Blood Blood, Venous Adjusted-F 1.0

Shipping and Handling

Processing Instructions: Double spin, separate, and freeze.

Transport Temperature: Frozen
Transport Instructions: N/A

Specimen Stability Unprocessed
Unprocessed: 4 hours

Specimen Stability Post Processing
Ambient: 4 hours
Refrigerate: N/A
Frozen: 2 weeks

Test Components

Component LOINC Code
ANTITHROMBIN III ASSAY 3174-0

Turnaround Time (TAT)

STAT 1 Hour
Routine 8 Days

CPT Code(s)

85300

Performing Lab Section

Coagulation

Performing Lab(s)

Dartmouth Hitchcock Medical Center Laboratory (MHMH)