CBI Lab Mistakes Impact Drunk Driving Cases

By Mark Ackerman and Brian Maass
DENVER (CBS4)– Poorly written instructions are being blamed for botched blood alcohol tests conducted by a scientist at the Colorado Bureau of Investigation.
In January, a CBS4 investigation revealed mistakes in 56 blood alcohol tests during a four month period from August 2015 through November 2015.
The problems were discovered through a confluence of events last December. A CBI refrigerator used to cool blood vials malfunctioned, leading to a need to rete