ANTITHROMBIN III EVALUATION
Marquette General Health System
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 |
Type |
  | Plasma Citrated |
Volume |
  | 2.0 (1.0) mL |
Temperature |
  | Frozen |
Preservative |
  |   |
Collection Info |
  | Split platelet-poor plasma into 2 plastic vials before freezing. |
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 Method CPT Code Units Name Method CPT Code Units Additional Comments Questions or Comments email support@mgh.org
Reference Lab Home Page
ANTITHROMBIN III FUNCTIONAL
CHROM
85300
%
Ref Range
75-125%
Reflex Reason
Collection Notes
ANTITHROMBIN III (AT3)
LIA
85301
%
Ref Range
80 - 120 %
Reflex Reason
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.
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