.jpg){kind=logo}
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
PROTHROMBIN TIME
Test CodePT (OE & LAB)
Alias/See Also
- Protime
- PT
CPT Codes
85610
Includes
PT, PT/INR Ratio
Preferred Specimen
Blue Tube (Sodium Citrate)
If a butterfly needle is use for collection, a NON-ADDITIVE discard tube must be drawn first
If a butterfly needle is use for collection, a NON-ADDITIVE discard tube must be drawn first
Patient Preparation
None
Minimum Volume
1 mL (Tube MUST be filled to nominal line for proper whole blood to anticoagulant ratio - see volume guides below)
Instructions
Upon collection, gently mix by inversion 6 times.
Lab note: Refer to document below (Obtaining a Platelet-Poor Specimen)
Lab note: Refer to document below (Obtaining a Platelet-Poor Specimen)
Transport Container
BLUE Tube
Transport Temperature
Room Temperature
Specimen Stability
15-30°C up to 24 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
- Hemolyzed
- Clotted
- Underfilled or overfilled
Methodology
Photo-Optical Clot Detection
Setup Schedule
DAILY, as received
Report Available
STAT: <60 minutes
Routine: <4 hours
Routine: <4 hours
Reference Range
Male/Female All Ages: Normal Range: 11.9-15.0 SEC Test:
Male/Female All Ages: Normal Range: Not Appicable Critical High : >=3.9 RATIO
Male/Female All Ages: Normal Range: Not Appicable Critical High : >=3.9 RATIO
Clinical Significance
Used to screen for defects of the extrinsic & common coagulation pathways.
Performing Laboratory
Mount Sinai Hospital
Holy Cross Hospital
Additional Information
BD Vacutainer Blue Top Volume Guide
Greiner Vacutainer Blue Top Volume Guide
Obtaining A Platelet-Poor Specimen
