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creatinine
Pathway / Off-pathway / systemic markers

creatinine

metabolite

Creatinine elevation indicates renal hypoperfusion and glomerular dysfunction secondary to cardiorenal injury and systemic endothelial stress in acute infarction.

Pathway placement
Cascade stepOff-pathway / systemic markers
Confidencehigh
RationaleRenal function marker; renal stress reflects hemodynamic and systemic endothelial injury post-MI.
Druggability
Not assessed (no mapped human gene target).

Type I vs Type II discrimination

ScoresIndeterminate
R — rupture / Type-I
—
C — confounder / Type-II
42
A — assay feasibility
96
E — evidence strength
49
T1DI (composite)
17
Specificity differential (R−C)-27
Confounder panel (Type-II drivers)
1sepsis / systemic inflammationmag 2
2anemia / acute blood lossn/a
3hypovolemia / dehydrationmag 1
4tachyarrhythmian/a
5hypoxemia / respiratory failuren/a
6hypertensive emergencymag 1
7high-demand / peri-operative stressmag 1
Coverage: 4/7 confounders with evidence
Tier: deep-scored (abstract-extracted) · 7 supporting references. See the discrimination table for all markers.

Assay & specimen

Validated clinical assay
Specimen
Serum or plasma; urine
Collection tube
Serum separator (gold/red-top, SST) · Lithium heparin (green-top) · Sterile urine container
Method / principle
Enzymatic (creatininase) or Jaffe (alkaline picrate)
Reagent / substrate
Creatininase→sarcosine oxidase→peroxidase Trinder; or picric acid (Jaffe)
Platform
Automated analyzer
Turnaround · availability
STAT–routine · Universal

Literature evidence(8)