Children's Mercy Hospitals and Clinics
Name
Partial Thromboplastin Time (PTT) Mixing Study

Synonyms
PTT Mixing Study

CMH Lab Section
Hematology

Specimen Requirements
2.7 mL sodium citrate blue top tube

Availability
STAT
Routine

Turn Around Time
STAT 2 hours
Routine 4 hours

Special Instructions
PTT will be performed prior to testing. PTT result must be >42 for mixing study.

Processing Instructions
Deliver to Lab ASAP

Methodology
Automated, mechanical clot detection

Ranges
no references ranges or interparation

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