Kratom is a Southeast Asian tree leaf whose compounds act partly like mild opioids — energizing at low intake, pain-relieving and calming at higher intake. The most consistent reported benefits are pain relief and easing opioid withdrawal, set against physical dependence and withdrawal, constipation, occasional serious liver injury, and danger when mixed with other sedating substances. (Full Review)
| Marker | Target | Why |
|---|---|---|
| ALT | < 25 U/L (men), < 20 U/L (women) | Detects early liver-cell injury |
| AST | < 25 U/L | Complements ALT for liver injury |
| ALP | 40–100 U/L | Flags cholestatic (bile-flow) liver injury |
| Total bilirubin | < 1.0 mg/dL | Marks impaired bile flow / severity |
| GGT | < 25 U/L | Confirms hepatobiliary source of enzyme rise |
| Lipid panel (LDL, HDL, triglycerides) | LDL < 100 mg/dL, HDL > 50 mg/dL, TG < 100 mg/dL | Tracks the metabolic markers kratom may shift |
| Fasting glucose | 75–90 mg/dL | Baseline metabolic health context |
Cadence: Baseline before starting; ~4–8 weeks after starting sustained use, then every 6–12 months, with earlier testing if symptoms appear.