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Test Code LAB326 aPTT 50/50 MIXING STUDY

Important Note

A Partial Thromboplastin Time must be performed first and billed. The PTT 50/50 mixing study will be credited and not performed if the initial PTT is normal.

Additional Codes

Primary ID

Epic Code

Mayo Access ID

PTT50

 LAB326 FAH300

 

Specimen Information

Container

Specimen

Temperature

Collect Vol

Submit Vol

Minimum Vol

 Stability
Blue Top Tube Whole Blood Ambient To fill line To fill line To fill line 4 hours
Blue Top Tube Plasma Frozen To fill line 2 mL plasma 1 mL plasma 6 months

Tube must be filled to the fill line. Please note on the laboratory requisition if the patient is on heparin.  Refer to  Coagulation Specimen Handling before collecting. *Submit  frozen plasma if the lab will not receive the sample within 4 hours.

Test Schedule / Analytical Time / Test Priority

Daily / 24 Hours / Available STAT

Method

Photo Optical Clot Detection

CPT(s)

Description CPT Code
50/50 Mixing Study-PTT 85732

 

Instrumentation

ACL Top 

Reference Range

Varies according to reagent lot, see report or call if needed.

Section

Coagulation

Performing Location

University of Vermont Medical Center

Is the UVMMC lab NY State Certified to perform this testing?  Yes/No

Yes

LOINC Code Information

Result Code Reporting Name LOINC Code
PATT50 Patient 5959-2
CONT50 Control 5949-3
MIXT50 Mix 5946-9