Cell culture drug resistance testing (CCDRT) is promoted by a private lab called Weisenthal Cancer Group. The test has had some trials done but is not fully proven. I got more interested when Medicare reviewed the available evidence & approved coverage (http://www.weisenthal.org/).
More info on the test can be found in this Q/A link which lists a dozen locations in the U.S.,Canada & Germany where it can be done :
http://www.weisenthal.org/faqw.htm
A related article discusses CCDRT regarding the combination of Chemotherapy drugs GEMCITABINE + PLATINUM
which is claimed to have an unrecognized potential:
http://www.cancerselfdefense.com/gemzar.htm
Opinion anyone? personal experience?