Lab Home

About Us

Policies

Help

Click on the first letter of test name, or select test group, to review specifications:

 

PTT MIXING STUDY

Alternate Names: Activated Partial Thromboplastin Time Mixing Study,
PTT Inhibitor Screen,
PTT Substitution Test
Performed: Daily, 24 Hours
Methodology: Photo Optical Clotting
Turnaround Time: Routine: 4 Hours
Stat: < 1 hour

Container / Specimen Requirements

 
    Container / Tube: Blue Vacutainer® tube (sodium citrate)
    Minimum Volume (tube drawn to FULL draw)

5 mL tube:

4.5 mL

3 mL tube:

2.7 mL
Special Handling or Timing of Specimen: None
Preparation of Patient: None
Reference Range: Mix should correct to 25.0 - 38.0 seconds
Causes for Specimen Rejection:  Improper labeling.
Clotted specimens.
Hemolysis.
Specimens diluted with I.V. fluid or contaminated with heparin.
Specimens that are too old (>2 hours).
Tubes must be filled to top of blue line on label.
CareManager Test Group:
CareManager Name/Alias:
CLAB
ptt
Specimen Labeling: Click here for policy

 

 
© 2002 New Hanover Health Network
2131 South 17th Street Wilmington, North Carolina 28401 910.343.7000

Please read disclaimer and privacy statement