Test Code PTTHE APTT Corrected
Additional Codes
Epic EAP: LAB2461
Epic Description: APTT, HEPARIN CORRECTED
Synonym
APTT Heparin Corrected
Specimen Type
Blood
Specimen Required
Collection Container | Preferred Volume | Minimum Volume | |
---|---|---|---|
Preferred |
Light Blue, Sodium Citrate |
2.7 mL | 2.7 mL |
Preferred (Neonatal) | Light Blue, Sodium Citrate | 1.8 mL | 1.8 mL |
Instructions for Collection and Transport
Fill tube to stated capacity. Do not underfill or overfill past tube’s vacuum capacity. If the patient’s known hematocrit value is above 55%, an adjustment of the ratio of anticoagulant to blood is necessary. Call the laboratory for a special collection tube for that hematocrit value.
Centrifuge 15 minutes at minimum speed of 3,000 rpm’s. Aliquot plasma into plastic vial. Transport within 2 hours of collection on freeze packs. If transport to take place more than 2 hours post collection, freeze plasma and transport on dry ice.
NOTE: It is very important to have platelet poor plasma before freezing. The platelet count on the aliquoted plasma should be <10,000.
Home Health Agencies:Transport to lab within 30 minutes.
Aliquot Requirements
Plasma
Optimum 1.5 mL
Minimum 0.75 mL
Performing Lab
Hematology Lab
Assay Frequency
Daily
Routine Turnaround Time
3 hours
CSR Storage Requirements
Transport to Hematology lab ASAP.