// multi-utility computation suite · offline · instant · precise
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health.ld50-safety-margin Calculator
Calculates the therapeutic index (TI = LD50/ED50) and safety margin for a drug and classifies the TI as narrow, moderate, or wide. Drugs with narrow therapeutic indices (TI < 2) require plasma level monitoring — warfarin, lithium, digoxin, and aminoglycosides are classic examples.
Inputs
Ld50 Mg Kg
Reference formula or conversion factor shown for context.
Therapeutic Dose Mg Kg
Amount of medication administered per period. Most dosing is weight-based — verify with a licensed prescriber before clinical use.
Body Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
Route Bioavailability Pct
Reference formula or conversion factor shown for context.
Results
therapeutic index TI
A normalised score comparing the result to a reference baseline.
lethal dose (g, 50% population)
The value at the specified point or condition.
therapeutic dose (g)
Reference formula or conversion factor shown for context.
safety margin (multiples of thera dose)
Gratuity amount — the suggested amount to add to the bill as a service tip.
TI interpretation
Qualitative summary of what the computed numbers mean in practical terms.