[ RadSafe ] Effective half life question

Cary Renquist cary.renquist at ezag.com
Wed Oct 24 16:26:28 CDT 2012

The RADAR site has an excel sheet with biokinetic info on many
This is the direct link to the excel sheet: 

Cary Renquist
cary.renquist at ezag.com

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Kulp, Jeffrey
Sent: Wednesday, 24 October 2012 12:00 PM
To: radsafe at health.phys.iit.edu
Subject: [ RadSafe ] Effective half life question

Hello Radsafers,


I have a question that is related to radiopharmaceuticals. I have been
told by a colleague that the effective half-life of a radioactive
isotope can differ based on the chemical preparation the isotope is in.
Essentially the biological half life will change due to the varying
clearance rates for different chemicals, thereby changing the effective
half-life. Is there a database that addresses the different biological
half-lives for various radiopharmaceuticals?




Jeffrey Kulp, RRPT

Radiation Health Physicist

DOH - Office of Radiation Protection

P.O. Box 47827

Olympia, Washington  98504-7827

(360) 236-3237

"Public Health - Always Working for a Safer and Healthier Washington"



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