Unit Code 91843:
Fentanyl and Metabolite Screen/Confirmation, Urine
Profile Information 
A profile is a group of laboratory tests that are ordered and performed together under a single Unit Code. Profile information lists tests performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.
| Unit Code | Reporting Name | Available Separately | Always Performed |
| 91839 | Fentanyl Screen, Urine | No | Yes |
| 91840 | Fentanyl and Metabolite Confirm, U | No | No |
Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.
Confirmation performed on positive screens at an additional
charge.
Method Name A short description of the method used to perform the test
Screen: Enzyme-Linked Immunosorbent Assay
Confirmation: High Performance Liquid Chromatography/Tandem
Mass Spectrometry (LC-MS/MS)
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Fentanyl and Metabolite Scrn/Conf, U
Ordering Mnemonic An alternate Mayo code (to the Unit Code) for a test
FFESC
FFENTA
Aliases Lists additional common names for a test, as an aid in searching
Soft-FFESC
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