Lipoprotein Fractionation by NMR, Particle Count only




Test Mnemonic

NMRPRT

CPT Codes

  • 83704 - QTY (1)

Aliases

  • HDL particle size
  • LDL particle size
  • LDL-P
  • LipoFit
  • LipoProfile

Includes

  • LDL-P
  • Small LDL-P
  • LDL Size
  • HDL-P
  • Large HDL-P
  • HDL Size
  • Large VLDL-P
  • VLDL Size
  • EER LipoFit by NMR, Particle Count Only

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mLSerumNo additive (Red) RefrigeratedPatient must be fasting 12 hours. Do not use gel separator tubes. Gently invert tube to mix. Allow specimen to clot completely at room temperature. Separate serum from cells within 8 hours of collection. Transfer serum to standard aliquot tube.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mL     

Stability

Environmental Condition Description
Refrigerated 1 month
FrozenUnacceptable
Ambient2 days

Days Performed

Sun - Sat

Turnaround Time

4 - 7 days

Methodology

Name Description
Nuclear Magnetic Resonance Spectroscopy 

Reference Range

Special Info

Patient must be fasting 12 hours. Do not use gel separator tubes. Non-fasting or lipemic specimens will be rejected. This test is New York state approved.

Clinical Info

This test is used in appropriate high-risk patients (eg, type 2 diabetes mellitus) in whom LDL particle number is being used to guide therapy. Not recommended for cardiovascular disease risk assessment in most individuals.