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PROTIME (PT), THERAPEUTIC (TPROX)
MessageMust be received at testing lab in order to perform testing within 24 hours of collection (room temperature).
Test Code
LAB2405
Alias/See Also
TPROX
Includes
Includes: INR
Preferred Specimen
5 mL whole blood
Instructions
Blue-top tubes (3.2% Sodium Citrate) must be completely filled (to the 'fill-line'). If a Blue-top tube is the only tube being collected, it is recommended that you draw and DISCARD a minimum of 5 mL prior to collecting. If a specimen must be collected through an indwelling catheter, the line should be flushed with 5 mL of saline and the first 5 mL of blood (or six dead space volumes of the catheter) discarded prior to drawing the testing specimen. If a specimen is drawn from an I.V. or arterial line, the I.V. must be turned off for at least 2 minutes and a minimum of 15 mL of blood discarded PRIOR to drawing this tube.
Transport Container
Blue top
Transport Temperature
Room temperature; do not refrigerate
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted or grossly lipemic specimen
Reference Range
PT: 23.8-35.8 seconds
INR: 2.0-3.0
INR: 2.0-3.0