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Test Code LAB4085 PROTIME MIXING STUDY

Important Note

Fill tubes completely to maintain correct anticoagulant/blood ratio.

Specimen Type

3mL Blue top (3.2% Sodium Citrate), or
5mL Blue top (3.2% Sodium Citrate)
 

Specimen Volume

5 mL

Minimum Volume

3 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Room Temp:  24 hours

Specimen Processing

Blue top tube filled to capacity. Must be performed within 24 hours of collection.

Method

Optical Density Endpoint

Reference Ranges

PT 1/1 (0 min) sec

Synonyms

Prothrombin Time Mixing Study;

PT, 1/1 Mix;

Prothrombin Inhibitor Study

Test Components

Protime 1/1 Mix, sec

CPT Codes

85611

Rejection Criteria

Severely hemolyzed, clotted specimens, improperly filled liquid blue top tube