If you have more than one test - add them one by one. pH (component)Benzodiazepines (component)Methadone (component)Hydromorphone (component) pH (component) Remove item Benzodiazepines (component) Remove item Methadone (component) Remove item Hydromorphone (component) Remove item No choices to choose from Please select an item from the autocomplete list Max stores per result: Any 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Verbose: See search details Switch to LabCorp lab tests (similar) Laboratory tests search details pH (component) (remove) Stores: HealthLabs, Personalabs Components: pH Hydromorphone (component) (remove) Stores: Personalabs Components: Hydromorphone No results found