General Medicine Cardiology Endocrinology A
LDL Cholesterol — Friedewald Equation
Calculates LDL from total cholesterol, HDL, and triglycerides. LDL = TC − HDL − (TG / 2.2). Not valid if TG >4.5 mmol/L.
References
- Friedewald WT, Levy RI, Fredrickson DS. Estimation of the concentration of low-density lipoprotein cholesterol in plasma. Clin Chem. 1972;18(6):499-502.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Drugs
- Atorvastatin (CKD Cardiovascular Risk) · Cardiovascular Risk in CKD
- Icosapent Ethyl (Omega-3 — Cardiovascular Risk Reduction) · Omega-3 Fatty Acid (Purified EPA — Eicosapentaenoic Acid Ethyl Ester)
- Fluvastatin · HMG-CoA reductase inhibitor (statin)
- Pravastatin sodium · HMG-CoA reductase inhibitor (hydrophilic statin)
- Simvastatin with ezetimibe · HMG-CoA reductase inhibitor + cholesterol absorption inhibitor
- Bempedoic acid with ezetimibe · ATP-citrate lyase inhibitor + cholesterol absorption inhibitor
Pathways
- Sepsis Screening and Sepsis Six · UK Sepsis Trust; NICE NG51; Surviving Sepsis Campaign 2021
- Unintentional Weight Loss Workup · NICE NG12; BSG
- Chronic Fatigue Workup · NICE NG206; BMJ Best Practice
- Lymphadenopathy Workup · NICE NG12; BMJ Best Practice
- Pre-op Medical Clearance · NICE NG45; ESC 2022
- Secondary Hypertension Workup · NICE NG136; ESH 2023
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.