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Partial Thromboplastin Time

Laboratory : Hematology

Test ID/Workstation :
PTT 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 based on volume of blood drawn (1.8 mL or 2.7 mL tube)
Cause for Rejection:
Samples 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. Please indicate if the patient is currently receiving anticoagulant therapy. If collected at an offsite location, send by a STAT Courier to Beeghly Hospital lab
Lab/Phone:
330-746-9623
TAT:
4 hours
Additional Info:
Reference range: < 41 seconds
CPT Code:
85730
Synonyms:
Activated Partial Thromboplastin Time; APTT; PTT