1 - 3 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Citrated plasma
1 mL
1 mL (Note: This volume does not allow for repeat testing.)
Light blue-top (sodium citrate) tube
Ship frozen on dry ice.
Clot, calculation
Prothrombin Time Age Range (sec) 0 - 30 days 9.8 - 13.2 1 - 6 months 9.8 - 12.6 7 months - 1 year 9.8 - 12.2 2 - 17 years 9.9 - 12.1 18 years and older 9.1 - 12.0 INR Age Range (ratio) 0 - 1 month 0.9 - 1.4 >1 month 0.9 - 1.2