Prothrombin Time


Test ID/Workstation: PT MACG1

Specimen Type: Blood

Tube Type: Blue top (sodium citrate) tube

Collection Volume: 2.7 mL

Cause for rejection: Sample hemolyzed, clotted, diluted with IV fluid; contaminated with heparin; improperly filled; not kept on ice; received > 1 hr. after drawn

Storage: Refrigerated

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 CCL personnel for the proper handling of the specimen and the reporting of results. Please indicate if the patient is currently receiving anticoagulant therapy.


Lab/Phone: 330-746-9623

TAT: 4 hours

Additional Info: Reference range: 12-14 secs.

Recommended Therapeutic Range for Oral Anticoagulant Therapy: Prophylaxis of venous thrombosis, Treatment of venous thrombosis, Treatment of pulmonary embolism, Prevention of systemic, and Tissue heart valves- INR 2.0-3.0, Myocardial infarction ( to prevent systemic embolism), Valvular heart disease, Atrial fibrillation, Mechanical prosthetic valves - INR 2.0-3.0

CPT Code: 85610

Synonyms: Protime; PT

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