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Prothrombin Time & Activated PTT

Laboratory : Hematology

Test ID/Workstation :
PTPTT MACG1
Specimen Type:
Blood
Tube Type:
Blue top (sodium citrate) tube
Collection Volume:
2.7 mL (minimum 1.8 mL) Must use appropriate sodium citrate tube base on volume of blood drawn (1.8 mL or 2.7 mL tube).
Cause for Rejection:
Specimen hemolyzed, clotted, diluted with IV fluid; contaminated with heparin; improperly filled; received > 1 hr after drawn
Storage:
Ambient
Availability:
Daily, 24 hours; STAT
Methodology:
Optical Light Scatter Detection Clotting Assay
Special Instructions:
Indicate clearly if a specimen has been drawn from an arterial line or from a line that has been rinsed with heparin. This information is absolutely essential to the laboratory personnel for proper handling of the specimen and the reporting of results. Please indicate if the patient is currently receiving anticoagulant therapy. If collected at an offsite location, send by a STAT Courier to Akron Children's at Mahoning Valley Hospital lab.
Lab/Phone:
330-746-9623
TAT:
4 hours
Additional Info:
Reference ranges: PT 12-14 secs; APTT < 41 secs
Synonyms:
PT & PTT; Protime & APTT