Heparin level-2283
Test info
Unfractionated heparin
HEP
Monitoring unfractionated Heparin
Specimen
Lt blue Sodium citrate (Na Cit) - 2.7mL
If the patient has a hematocrit >55, a specially prepared Lt blue Sodium citrate (NaCit) tube must be used in place of the standard Lt blue Sodium citrate (NaCit) tube.
- Infusion: collect specimen 8 hours post start or adjustment
- SubQ: collect specimen 4 hours post dose
- Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting
Samples should be centrifuged within 1 hour of collection and tested no longer than two (2) hours from collection at room temperature.
If testing cannot be completed within 2 hours of collection:
- Process Platelet Poor Plasma (P.P.P)
-
Transfer plasma into an aliquot tube using a spot label "NaCit Plasma P.P.P" to label as platelet poor plasma
-
Freeze immediately
Microcentrifuge vial/tube in a Snap cap conical vial/tube and cap (Beaker sites)
Coagulation specimen transport vial/tube (all other sites)
Routine:
Frozen (strict) - 2 weeks
Refrigerated - NO
STAT:
Ambient
- Whole blood, unopened - 1 hr
- Centrifuged plasma on the cells - 2 hours
- Improper labeling (unlabeled or mislabeled)
- Improper anticoagulant
- Improperly filled tube
- Hemolysis
- Clotted specimen
- Delay in transport
- Improper storage/transport temperature
- Patient on heparin > 1.0 IU/mL
Performance
Available at the Central Laboratory and Mercy and United hospitals.
Chromogenic Assay Anti-Xa
Clinical and Interpretive info
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