ANTITHROMBIN III EVALUATION
Marquette General Health System

General Info

HLAB/HOL Code

  AT3EV

MGH LIS Test No

  9044

Schedule

  Tuesday-Saturday

Testing Time

  2-4 days

Testing Lab

  Quest Valencia

QORR Test Code

  A9044

Specimen Info

Type

  Plasma Citrated  

Volume

  2.0 (1.0) mL

Temperature

  Frozen

Preservative

   

Collection Info

  Split platelet-poor plasma into 2 plastic vials before freezing.
 
Specimen Acceptability

Methods

Clinical Utilities
Thrombosis, DIC, coagulopathy.

CPT Codes
85300, 85301

The CPT codes provided are based on AMA guidelines
and are for informational purposes only. CPT coding is the
sole responsibility of the billing party. Please direct any questions
regarding coding to the payer being billed.

Reference Range

Component Information

Name

  ANTITHROMBIN III FUNCTIONAL 

Method

  CHROM 

CPT Code

  85300 

Units

 
Ref Range   75-125% 
Reflex Reason    
     

Name

  ANTITHROMBIN III (AT3) 

Method

  LIA 

CPT Code

  85301 

Units

 
Ref Range   80 - 120 % 
Reflex Reason    
     
Collection Notes
Instructions for platelet-poor plasma:
1. Draw a plain red top tube to remove fluid contamination.
Discard this tube.
2. Draw blood into a buffered citrate collection tube (light blue
top) filled to the proper level. Sodium citrate of 0.109M or 0.12M
should be used. Other anticoagulants may cause invalid results.
3. Gently invert tube 6 times to mix. Process immediately.
4. Centrifuge for 15 min at 1500 x g.
5. Remove plasma using a plastic pipette and transfer to a new 
tube.
6. Repeat the centrifugation at 1500 x g for 15 min to assure
complete platelet removal.
7. Dispense the plasma into 2 or more plastic tubes using a plastic
transfer pipette. Label tube "platelet-poor plasma".
8. Freeze immediately at -70 C.
9. Specimen must remain frozen at all times. Ship on dry ice
within 24 by overnight courier.

Additional Comments

 

Questions or Comments email support@mgh.org

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