Clinical use
Use this calculator for calculated ldl when tg < 400 in thegeneral workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.
Calculate LDL
Interpretation
Friedewald equation: unreliable if TG >400 mg/dL or non-fasting. Consider direct LDL measurement in these cases. Target varies by cardiovascular risk.
Required inputs
- Total Cholesterol
- Hdl
- Triglycerides
Evidence and limitations
This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.
References
- Friedewald WT et al. Clin Chem 1972;18:499-502
Frequently asked questions
What is the LDL Cholesterol (Friedewald)?
LDL Cholesterol (Friedewald) is a clinical calculator used for Calculated LDL when TG < 400.
How do I interpret the LDL Cholesterol (Friedewald)?
Friedewald equation: unreliable if TG >400 mg/dL or non-fasting. Consider direct LDL measurement in these cases. Target varies by cardiovascular risk.
What inputs are required for the LDL Cholesterol (Friedewald)?
Required inputs include Total Cholesterol, Hdl, Triglycerides.
What is the evidence behind the LDL Cholesterol (Friedewald)?
The LDL Cholesterol (Friedewald) page cites Friedewald WT et al. Clin Chem 1972;18:499-502.
Next steps
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