Biological Half-Life
Compute the elimination half-life from volume of distribution and clearance.
Description
Compute the elimination half-life from volume of distribution and clearance.
Biological Half-Life is a focused biology tool that compute the elimination half-life from volume of distribution and clearance. It calculates locally from the values you enter and exposes the result without changing the source observations.1
When to use Biological Half-Life
Use Biological Half-Life when you need to compute the elimination half-life from volume of distribution and clearance. Enter Volume of distribution and Clearance using the definitions and units below so the result can be reproduced.
- Volume of distribution
- A finite measured or assumed value, expressed in L.
- Clearance
- A finite measured or assumed value, expressed in L/h.
How Biological Half-Life calculates the result
The published tool contract uses this rule: Compute the elimination half-life from volume of distribution and clearance.
- Half-life
- The calculated half-life in h.
Limitations of Biological Half-Life
The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability.
Alternative or Complementary measurements
Retain the original Volume of distribution and Clearance values and their units alongside the result. Elimination Half-Life is useful when you instead need to compute the first-order elimination half-life as 0.693 times the volume of distribution divided by the clearance. IC50 Inhibition Conc provides another view by helping you estimate the half-maximal inhibitory concentration by inverting the Hill equation.
References
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Biological half-life — Wikipedia contributors
Similar or alternative tools
- Elimination Half-Life
Compute the first-order elimination half-life as 0.693 times the volume of distribution divided by the clearance.
- IC50 Inhibition Conc
Estimate the half-maximal inhibitory concentration by inverting the Hill equation.
- Serial Dilution Biology
Compute the endpoint concentration of a serial dilution: finalConcentration = startConcentration x transferRatio^steps, with a strictly fractional transfer ratio and at least one step.