hauman's- a typo?
In humans, carisoprodol (Soma) half-life has been reported to be between 8 to 10 hours.
After 5 half lives, about 1% of the drug remains in your system.
For Soma, the math indicates that there will be a 99% reduction in the drug after 1.67 to 2.1 days.
Jay
P.S. Soma is not routinely screened for on urine or blood tests.
It can be detected, however.
http://www.medscape.com/viewarticle/430140_2. This link does not work. Google carisoprodol urine screen and click on this site to bring up the article about this.