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Elimination Half Life of Drug Formula

GoElimination Half Life given Volume of Plasma Cleared Formula

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Elimination Half Life is the time required for the concentration of the drug to reach half of its original value. Check FAQs

t b/2 = \frac{\ln (2)}{k e}

t_b/2 - Elimination Half Life?k_e - Elimination Rate Constant?

Elimination Half Life of Drug Example

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Here is how the Elimination Half Life of Drug equation looks like with Values.

Here is how the Elimination Half Life of Drug equation looks like with Units.

Here is how the Elimination Half Life of Drug equation looks like.

43022.9284 = \frac{\ln (2)}{0.058}

43022.9284s = \frac{\ln (2)}{0.058h⁻¹}

43022.9284 = \frac{\ln (2)}{0.058}

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Elimination Half Life of Drug Solution

Follow our step by step solution on how to calculate Elimination Half Life of Drug?

FIRST Step Consider the formula

t b/2 = \frac{\ln (2)}{k e}

Next Step Substitute values of Variables

∴

t b/2 = \frac{\ln (2)}{0.058h⁻¹}

Next Step Convert Units

∴

t b/2 = \frac{\ln (2)}{1.6E-5s⁻¹}

Next Step Prepare to Evaluate

∴

t b/2 = \frac{\ln (2)}{1.6E-5}

Next Step Evaluate

∴

t b/2 = 43022.9284485484s

LAST Step Rounding Answer

∴

t b/2 = 43022.9284s

Elimination Half Life of Drug Formula Elements

Variables

Functions

Elimination Half Life

Elimination Half Life is the time required for the concentration of the drug to reach half of its original value.

Symbol: t_b/2

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Elimination Half Life

Elimination Rate Constant

Elimination Rate Constant is the rate at which a drug is removed from the body.

Symbol: k_e

Measurement: First Order Reaction Rate ConstantUnit: h⁻¹

Note: Value should be greater than 0.

Formulas to find Elimination Rate Constant

The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function.

Syntax: ln(Number)

Other Formulas to find Elimination Half Life

Go Elimination Half Life given Volume of Plasma Cleared

t b/2 = \frac{\ln (2) \cdot V d}{CL}

Other formulas in Elimination Rate Constant category

Go Elimination Rate Constant given Area under Curve

k e = \frac{D}{AUC \cdot V d}

Go Elimination Rate Constant given Volume of Plasma Cleared

k e = \frac{CL}{V d}

Go Elimination Rate Constant of Drug

k e = \frac{\ln (2)}{t b/2}

Go Total Clearance of Body

CL total = CL hepatic + CL renal + CL pulmonary + CL other

How to Evaluate Elimination Half Life of Drug?

Elimination Half Life of Drug evaluator uses Elimination Half Life = ln(2)/Elimination Rate Constant to evaluate the Elimination Half Life, The Elimination half life of drug formula is defined as the inverse relationship with the rate at which a drug is removed from the body. Elimination Half Life is denoted by t_b/2 symbol.

How to evaluate Elimination Half Life of Drug using this online evaluator? To use this online evaluator for Elimination Half Life of Drug, enter Elimination Rate Constant (k_e) and hit the calculate button.

FAQs on Elimination Half Life of Drug

What is the formula to find Elimination Half Life of Drug?

The formula of Elimination Half Life of Drug is expressed as Elimination Half Life = ln(2)/Elimination Rate Constant. Here is an example- 43022.93 = ln(2)/1.61111111111111E-05.

How to calculate Elimination Half Life of Drug?

With Elimination Rate Constant (k_e) we can find Elimination Half Life of Drug using the formula - Elimination Half Life = ln(2)/Elimination Rate Constant. This formula also uses Natural Logarithm (ln) function(s).

What are the other ways to Calculate Elimination Half Life?

Here are the different ways to Calculate Elimination Half Life-

Elimination Half Life=(ln(2)*Volume of Distribution)/Volume of Plasma Cleared

Can the Elimination Half Life of Drug be negative?

No, the Elimination Half Life of Drug, measured in Time cannot be negative.

Which unit is used to measure Elimination Half Life of Drug?

Elimination Half Life of Drug is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which Elimination Half Life of Drug can be measured.

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