Clearance rate
The volume of blood from which a peptide is completely removed per unit time, expressed in mL/min or L/hr. Clearance determines dosing frequency along with half-life.
Frequently Asked Questions
What is Clearance rate?
Why is Clearance rate important in peptide research?
Related Terms
The time required for the concentration of a peptide in the body to decrease by half. Determines dosing frequency — short half-life peptides (minutes) need daily dosing, while long half-life peptides (days) can be dosed weekly.
Renal clearanceThe removal of a peptide from the blood by the kidneys. Smaller peptides (below ~60 kDa) are filtered by the glomerulus. PEGylation increases molecular size to reduce renal clearance and extend half-life.
Hepatic metabolismThe breakdown of peptides by liver enzymes. Most peptides are degraded by proteases rather than CYP450 enzymes, which means fewer drug-drug interactions compared to small-molecule drugs.
Steady stateThe condition where the rate of peptide administration equals the rate of elimination, resulting in consistent plasma levels. Typically reached after 4–5 half-lives of regular dosing.