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
FDA Category
Laboratory Developed Test
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Serum | No additive (Red) | Refrigerated | Patient 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 |
| Frozen | Unacceptable |
| Ambient | 2 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.