LDL cholesterol, direct

Alphabetical Test listing

LDL cholesterol, direct-5665

Test name:

Test number:

5665

Excellian order number:

83721.0

Abbreviation:

LDC

Alternate names:

Direct measure LDL

Patient preparation information:

Patient fasting prior to sample collection is recommended, but not required

Fasting for a blood test

Specimen type:

Lithium heparin (Li hep) plasma

Collection container:

Lt green plasma separator (PST)

Volume:

1.0 mL

Minimum volume:

0.2 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times to prevent clotting

Processing instructions:

Spin

Transport container:

Lt green plasma separator (PST)

Alternate specimen type:

Serum

Alternate collection container:

Gold serum separator (SST) tube

Alternate collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Alternate processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Alternate transport container:

Gold serum separator (SST) tube

Transport and stability:

Refrigerated - 7 days

Frozen - 12 months

Reason for rejection:

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)

Performing lab:

AHL - Chemistry: C

Days set up:

Daily

TAT:

1 day

Method:

Homogenous enzymatic colorimetric

Reference ranges:

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

Clinical information:

Samples with triglyceride concentrations >1,300 mg/dL should not be used for the determination of LDL cholesterol.

CPT codes:

83721

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

Date created:

11/30/2001

Revised date:

05/02/2023

Review date:

12/02/2021