NMR LipoProfile® (With Graph)

CPT: 80061; 83704
Updated on 8/2/2017
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Test Details

Synonyms

  • Cholesterol
  • Lipoprotein Analysis (LDL-P, HDL-P, LDL Size), Expanded
  • Cholesterol
  • Lipoprotein Analysis (LDL-P, HDL-P, LDL Size), Expanded
  • Cholesterol
  • Lipoprotein Analysis (LDL-P, HDL-P, LDL Size), Expanded
  • Cholesterol
  • Lipoprotein Analysis (LDL-P, HDL-P, LDL Size), Expanded
  • Cholesterol
  • Lipoprotein Analysis (LDL-P, HDL-P, LDL Size), Expanded

Test Includes

Color graphical report; historical reporting (LDL-P, LDL-C); insulin-resistance score; lipoprotein particle number (LDL-P); particle concentration and size (total HDL-P, small LDL-P, LDL size); standard lipid panel (total cholesterol, calculated LDL cholesterol, HDL cholesterol, triglycerides).

Use

NMR LDL-P is a management tool used in appropriate high-risk patients (type 2 diabetes mellitus, metabolic syndrome, CVD risk equivalent, statin-treated patients) to adjudicate response to treatment and guide adjustment in therapy. It is used in conjunction with other lipid measurements and clinical evaluation to aid in the management of lipoprotein disorders associated with cardiovascular disease.

Limitations

If triglyceride level is >400 mg/dL, LDL cholesterol will not be calculated.

Methodology

Nuclear magnetic resonance (NMR)

Additional Information

The NMR LipoProfile® test is an FDA-cleared blood test that directly measures the amount of LDL circulating in the body. “LDL” is low-density lipoprotein and has long been recognized as a major causal factor in the development of heart disease. Although the relationship of increased LDL particle number and plaque buildup in the artery wall has been known since the 1950s, a diagnostic test did not exist to measure LDL particle number (LDL-P). Historically, LDL cholesterol, or LDL-C, has been used to estimate LDL levels to assess a patient’s LDL-related cardiovascular risk and judge an individual’s response to LDL-lowering therapy. Today, a more reliable measure of LDL exists that directly counts the number of LDL particles a patient has using NMR technology.

Specimen Requirements

Specimen

Spun NMR LipoTube (preferred), serum from a plain red-top tube, plasma from a lavender-top (EDTA-no gel), or green-top (heparin-no gel) tube. Keep refrigerated and ship with frozen cool packs.

Volume

2 mL

Minimum Volume

1 mL

Container

NMR LipoTube (black-and-yellow-top tube) is the preferred container, plain red-top tube, lavender-top (EDTA-no gel) tube, or green-top (heparin-no gel) tube.

Patient Preparation

Patient should be fasting for 12 to 14 hours.

Collection

Collect specimen in NMR LipoTube (black-and-yellow-top tube), which is the preferred container. Plain red-top, green-top (heparin-no gel), or lavender-top (EDTA-no gel) tubes are also acceptable. Serum or plasma drawn in gel-barrier collection tubes other than the NMR LipoTube should not be used. The LipoTube is the only acceptable gel-barrier tube. Gently invert tube 8 to 10 times to mix contents and allow specimen to clot for 30 minutes upright at room temperature prior to centrifugation (Plasma tubes should not clot). Centrifuge specimen within two hours of collection at 1800xg for 10 to 15 minutes to separate serum/plasma from the red cells and to avoid red cell contamination during shipment. If the sample cannot be centrifuged immediately, the sample should be refrigerated (at 2ºC to 8ºC) and centrifuged within 24 hours of collection. Note: Centrifuging the specimen while still cold may negatively affect the migration of the gel to the serum/red cell interface and may increase the likelihood of specimens being contaminated with red cells during shipment. All specimens should be centrifuged by the client, prior to shipment to LabCorp, to ensure sample integrity. Do not open NMR LipoTube (black-and-yellow-top). Immediately after centrifugation, pipette separated red-top serum or green-top/lavender-top plasma into a transport tube and label accordingly (serum, heparin plasma, EDTA plasma). Keep samples refrigerated until shipment to the laboratory, and ship with frozen cool packs.

Storage Instructions

Refrigerate all acceptable tube types as soon as possible after centrifugation and within 24 hours of collection. Keep refrigerated prior to shipment, and ship on frozen cool packs. Do not store at room temperature. Do not freeze the sample. Sample is stable refrigerated for six days.

Causes for Rejection

Unspun specimens; plasma/serum contaminated with red cells; citrated plasma (light blue-top tube); gross hemolysis; specimen received in inappropriate container; specimen stored at room temperature for more than a total preanalytical time of 24 hours; specimen more than six days old

LOINC® Map

Order Code Order Code Name Result Code Result Code Name UofM Result LOINC
123810 NMR LipoProf+Graph 884268 LDL Particle Number N/A
123810 NMR LipoProf+Graph 884294 LDL-P nmol/L 54434-6
123810 NMR LipoProf+Graph 884269 Lipids N/A
123810 NMR LipoProf+Graph 123470 LDL-C mg/dL 13457-7
123810 NMR LipoProf+Graph 884255 HDL-C mg/dL 2085-9
123810 NMR LipoProf+Graph 884256 Triglycerides mg/dL 2571-8
123810 NMR LipoProf+Graph 884253 Cholesterol, Total mg/dL 2093-3
123810 NMR LipoProf+Graph 884295 LDL and HDL Particles N/A
123810 NMR LipoProf+Graph 884296 HDL-P (Total) umol/L 49748-7
123810 NMR LipoProf+Graph 884297 Small LDL-P nmol/L 43727-7
123810 NMR LipoProf+Graph 884309 LDL Size nm 17782-4
123810 NMR LipoProf+Graph 884306 Insulin Resistance Score N/A
123810 NMR LipoProf+Graph 884312 LP-IR Score 62255-5
123810 NMR LipoProf+Graph 123811 NMR PDF Image N/A
123810 NMR LipoProf+Graph 123469 Historical Reporting N/A
123810 NMR LipoProf+Graph 123459 NMR Fractions-Propel N/A
123810 NMR LipoProf+Graph 123460 NMR Fractions-Std. N/A
123810 NMR LipoProf+Graph 123461 NMR Lipids-Propel N/A
123810 NMR LipoProf+Graph 123462 NMR Lipids-Std. N/A
Reflex Table for LDL-C
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 123465 Comment: 123465 Comment: N/A
Reflex Table for LDL Size
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 123466 Comment: 123466 Comment: N/A
Reflex Table for LP-IR Score
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 123464 Comment: 123464 Comment: N/A

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