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5158: Antithrombin III Antigen [5158X] Print View
Antithrombin III, Antigen NEPHELOMETRY  19 - 30  mg/dL 

PRIMARY
1 Plasma Citrated 1 (0.5) mL   Frozen - 21 Day(s)  
ALTERNATE
  Plasma [default] 1 (0.5) mL   Frozen - 21 Day(s)  
  Source Not Given Plasma 1 (0.5) mL   Frozen - 21 Day(s)  

Previously referred to as ''antithrombin III,'' antithrombin is an inhibitor of several coagulation factors. Patients with low concentrations of Antithrombin Antigen may have a hereditary or acquired prothrombotic state. The Antigen test differentiates a Type I from Type II deficiency.

Platelet Poor Plasma: Centrifuge light blue-top tube 15 minutes
at approx. 1500 g within 60 minutes of collection. Using a
plastic pipette, remove plasma, taking care to avoid the
WBC/platelet buffy layer and place into a plastic vial.
Centrifuge a second time and transfer platelet-poor plasma into
a new plastic vial. Plasma must be free of platelets
(<10,000/mcl).
Freeze immediately and ship on dry ice
Patient should abstain from anabolic steroids, gemfibrozil,
heparin therapy, asparaginase, estrogens, gestodene, and oral
contraceptives optimally for 3 days prior to specimen collection.
Overnight fasting is preferred.

Transport Temperature: Frozen
Setup Schedule
Tuesday, Thursday, Saturday

Reported (Analytical Time)
Next day

CPT Code
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.






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