Inhibitor Assay, PT with Reflex to PT 1:1 Mix 2-Hour Incubation : ARUP Lab Tests

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Inhibitor Assay, PT with Reflex to PT 1:1 Mix 2-Hour Incubation : 0030161

Mnemonic: INHIB PT

Methodology:	Electromagnetic Mechanical Clot Detection
Performed:	Mon-Fri
Reported:	1-4 days
Specimen Required:	Collect: Two 5 mL lt. blue (sodium citrate). (Min: 5 mL) Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for specimen collection instructions. Storage/Transport Temperature: 3 mL platelet-poor plasma, frozen. (Min: 2 mL) Submit specimen in an ARUP Standard Transport Tube. Unacceptable Conditions: Serum. Hemolyzed specimens. Specimens refrigerated more than 24 hours. Stability (collection to initiation of testing): Ambient: 24 hours; Refrigerated: 24 hours; Frozen: 1 week

Reference Interval:

Test Number	Components	Reference Interval
0030215	Prothrombin Time	12.0-15.5 seconds
	Prothrombin Time 1:1 Mix	12.0-15.5 seconds
	Prothrombin Time 2-hr Incubation	Not established
	Prothrombin Time 2-hr 1:1 Mix	Not established
	Interpretation, Coag	By report

Note:

Reference interval established using 3.2% sodium citrate.

If PT is elevated, then PT 1:1 mix will be added. If PT 2-hr incubation is elevated, then PT 1:1 mix with 2-hr incubation will be added.

CPT Code(s):

85610 x2 PT; if reflexed, add 85611 each PT 1:1 mix

Cross References:

Prothrombin Time (PT) Mixing Study, PT Inhibitor Assay

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