Point of care drug of abuse test system configured to allow a small number of general test kits to be used to analyze many different combinations of analytes, while preserving privacy and the chain of custody. The system uses disposable multiple-analyte test kits and allows the operator to select which subset of kit analytes to run. The computerized device images the test kits and transmits test results to a remote server along with a test specific ID code. The test kit is often obfuscated so that the local operator cannot interpret the results. Other donor information, such as driver's licenses and signatures, are also obtained and transmitted as well. The remote server uses the test specific ID code to retrieve an obfuscation code (answer key) from the server's database, allowing the server to interpret the results. The annotated results are transmitted to a recipient along with suitable donor verification information.