Cardio IQ® Lipoprotein Fractionation, Ion Mobility [91604]

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

Alias/See Also

CPT Codes

LDL Particle Number
LDL Small
LDL Medium
HDL Large
LDL Pattern
LDL Peak Size

Preferred Specimen
1 mL serum

Patient Preparation
Fasting preferred, but not required

Minimum Volume
0.25 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Gross lipemia

Ion Mobility

Setup Schedule
Set up: Daily; Report available: 3-4 days

Reference Range
See Laboratory Report

Clinical Significance
There is a correlation between increased risk of premature heart disease with decreasing size of LDL particles. Ion mobility offers the only direct measurement of lipoprotein particle size and concentration for each lipoprotein from HDL3 to large VLDL.

Performing Laboratory
Cleveland HeartLab, Inc
6701 Carnegie Avenue, Suite 500
Cleveland, OH 44103-4623

Last Updated: November 24, 2021

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.