LabCorp

Please use the sample form images below to locate your Lab Account Number. If you do not have a copy of your form, and do not know your Lab Account Number, please contact customer service. NOTE: LabCorp uses two types of forms. Both are shown below for your reference.

Federal Drug Testing Custody and Control Form

Your account code is located in the "Step 1" section. It is next to the MRO's City, State, and Zip Code. It is the 6 digit number that is shown below in red.

Chain of Custody Form

Your account code is located in the "Step 1" section. It is next to the MRO's Company Name. It is the 6 digit number that is shown below in red.