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PTT
Number 118
CPT Code 
Alias PARTIAL THROMBOPLASTIN TIME (PTT)
Specimen Container Blue Top Citrate
Specimen Type Plasma Citrate
Turn Around Time 24-48 Hours
Days Performed Monday – Saturday
Reference Range 
Alternate Specimen 
Volume 1 mL Plasma
Stability Ambient 1 Day
Stability Refrigerated 1 Day
Stability Frozen 14 Days
Patient Preparation 
Methodology 

Clot formation/ photometric

Limitations 
Rejection Criteria 
Additional Instructions 

Blue top tube must be filled completely

Performing Laboratory Primex
TagsPTT, THROMBOPLASTIN, TIME

COVID-19 Testing Guidance

Primex Clinical Laboratories strives to provide clients with quality testing services to better support patient health. With the ongoing pandemic, COVID-19 testing has become high in demand yet testing supplies are limited.

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COVID-19 Testing Guidance

Primex Clinical Laboratories strives to provide clients with quality testing services to better support patient health. With the ongoing pandemic, COVID-19 testing has become high in demand yet testing supplies are limited.

Read More