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PROTIME AND PTT, PREOP (OPSPP)
MessageThis test code orderable for Outreach pre-op patients only. For collection information, see test codes OPSPTT (Preop PTT) and OPSPT (Preop PT).
Test Code
LAB2452
Alias/See Also
OPSPP
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, IV, or arterial line, flush with 5 mL of saline and discard the first 5 mL of blood (or six dead space volumes of the catheter) prior to collecting the testing specimen. Centrifuge and freeze plasma for transport.
Transport Container
Blue top
Transport Temperature
Frozen
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Clotted specimens
Reference Range
PT: 10.3-13.3 seconds
INR: 0.85-1.15
INR: 0.85-1.15
