LDL cholesterol, direct
LDL cholesterol, direct-5665
Patient fasting prior to sample collection is recommended, but not required
Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting
Spin
Lt green plasma separator (PST)
Immediately following collection, thoroughly mix sample by gently inverting 5 times
- Allow sample to clot for a minimum of 30 minutes
- Spin within two (2) hours of sample collection
Gold serum separator (SST) tube
Architect:
Refrigerated - 5 days
Roche:
Refrigerated - 7 days
Frozen - 12 months
- Improper labels (unlabeled or mislabeled)
- Hemolysis
- Improper anticoagulant or ratio
- Delay in transport
- Improper storage temperature affecting results
- Improper container
- Leaking container resulting in compromised specimen
- Quantity not sufficient (QNS)
Architect:
Measured, Liquid Selective Detergent
Roche:
Homogenous enzymatic colorimetric
Architect:
|
Risk category LDL goal |
Range | |
|---|---|---|
| Vascular disease and/or diabetes | <100 mg/dL | |
| Multiple (2+) risk factors | < 130 mg/dL | |
| 0 – 1 risk factors | < 160 mg/dL |
Roche:
Optimal <100 mg/dL
Near Optimal 100 – 129 mg/dL
Borderline High 130 - 159 mg/dL
High 160 - 189 mg/dL
Very High >= 190 mg/dL
Samples with triglyceride concentrations >1,300 mg/dL should not be used for the determination of LDL cholesterol.