Free fatty acids
lipidElevated free fatty acids promote lipid retention, oxidation, and plaque destabilization.
Pathway placement
Cascade stepLipid retention & oxidation
Confidencemedium
RationalePredictive of vulnerable plaque; reflect lipid mobilization and cardiometabolic stress.
Also acts inSystemic / off-pathway
Druggability
Not assessed (no mapped human gene target).
Type I vs non-Type I discrimination
ScoresLow-confidence (proxy)
R — rupture / Type-I62
C — non-Type-I78
A — assay feasibility40
E — evidence strength34
T1DI (composite)6
Specificity differential (R−C)-16
Non-Type-I axis panel
Does this marker also move in each non-Type-I setting? mag 0–3; higher means less Type-I-specific. n/a = no evidence retrieved, which is not the same as no change.
No non-Type-I axis evidence retrieved.
Tier: light (literature co-occurrence proxy — lower confidence). See the discrimination table for all markers.
Assay & specimen
Class-level default (no specific cleared assay)— generic method inferred from analyte class; confirm against a specific product insert before use.
Specimen
Serum or plasma (EDTA to limit oxidation)
Collection tube
K2/K3-EDTA (lavender-top) · Serum separator (gold/red-top, SST)
Method / principle
LC-MS/MS lipidomics (targeted or shotgun)
Reagent / substrate
Deuterated lipid-class internal standards; MS/MS transitions
Platform
LC-MS/MS
Turnaround · availability
Research · Research-only
Literature evidence(1)
- Plasma lipidome differences in patients with and without significant carotid plaque.Vascular pharmacology · 2024 · PMID 38705432 · doi