See Coagulation Specimen Collection Guidelines.
Whole blood specimen tubes must reach the testing department within 24 hours, otherwise submit frozen plasma aliquots.
NOTE: Frost-free refrigerator freezers are not acceptable for frozen sample storage. If proper storage is unavailable at the collection site, freeze/store aliquots on dry ice. Alternatively, send the patient to the nearest Legacy Hospital Outpatient Lab for sample collection/processing.
If submitting whole blood, transport at ambient temperature (15-25°C) in original unopened tube.
If submitting frozen plasma aliquots, specimens must remain frozen (-20°C) during transport. Protime/INR specimens should never be refrigerated.