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HelpTest ID BLOD0673 PTT
AKA
APTT, Partial Thromboplastin Time, Activated Partial Thromboplastin Time
Specimen Type/Requirements
Blue-Top (Sodium Citrate) Tube-Must be filled to the minimum draw line.
**Hemolyzed specimens will be rejected.
Specimen Volume
| Preferred Volume | 1 full Blue-Top (Sodium Citrate) Tube-Whole blood |
| Minimum Volume | 1 mL platelet poor plasma |
Stability/Transport
| Room Temperature |
1 hour if patient is currently on heparin therapy 4 hours if patient is not currently on heparin |
|
| Refrigerated | N/A | |
| Frozen | 1 month (platelet poor plasma in an aliquot tube) | Preferred for Transport |
Performed Test Frequency
Monday-Sunday
Performing Lab
Sanford Laboratories-Bemidji
Methodology
Mechanical-Silica Activator
CPT
85730