0030215
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Prothrombin Time

PT
Example Reports
Critical
High
Low
Normal

Ordering Recommendation

Initial test for suspected bleeding disorder.

Methodology

Electromagnetic Mechanical Clot Detection

Performed

Sun-Sat

Reported

1-2 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Light Blue (Sodium Citrate). Special Specimen Collection and Handling Hemostasis/Thrombosis Specimens guide located at https://www.aruplab.com/Specimen-Handling/SpecialSpecimenCollection/Hemostasis-Thrombosis.pdf.

Specimen Preparation

Transfer 1 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Serum or EDTA plasma. Clotted or hemolyzed specimens.

Remarks
Stability

Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 weeks
University of Utah Clients: Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: 2 weeks

Reference Interval

12.0-15.5 seconds

Interpretive Data



Compliance Category

FDA

Note

Reference intervals established using 3.2% sodium citrate.

Hotline History

N/A

CPT Codes

85610

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Components

Component Test Code* Component Chart Name LOINC
0030220 Prothrombin Time 5902-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Prothrombin Time, Plasma
  • Protime
  • PT
Prothrombin Time