7028 PTT (Partial Thromboplastin Time)

Specimen Type	Specimen Stability	Reference Range
Citrated Plasma (Light Blue Top Tube)	Unopened for 4 hours at Room temp. If >4 Hours - Freeze plasma. Please follow Platelet Poor Plasma procedure. This procedure is found under Clinical Pathology Collection/Rejection Guidelines.	See Report

Specimen Requirements Preferred Amount: 2.7 ml/4.5 ml Specimen Type:Citrated Plasma (Light Blue Top Tube)

Method CA 600

Schedule Monday-Saturday

CPT Codes 85730

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