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HelpTest Code ADLTX Adulterants Survey, Chain of Custody, Random, Urine
Reporting Name
Adulterants Survey, CoC, UPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Assess the possible adulteration of a urine specimen submitted for drug of abuse testing
Providing the urine creatinine concentration for normalization purposes
Chain of custody is required whenever the results of testing could be used in a court of law. Its purpose is to protect the rights of the individual contributing the specimen by demonstrating that it was always under the control of personnel involved with testing the specimen; this control implies that the opportunity for specimen tampering would be limited.
Method Name
Spectrophotometry
Specimen Required
Supplies: Chain of Custody Kit (T282)
Container/Tube: Chain-of-custody kit containing the specimen containers, seals, and documentation required.
Specimen Volume: 1.5 mL
Collection Instructions: Collect a random specimen without preservative in the provided container, seal, and submit with the associated documentation to satisfy the legal requirements for chain-of-custody testing.
Additional Information: Submitting less than 1.5 mL will compromise the ability to perform all necessary testing.
Specimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days | ||
| Ambient | 72 hours |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
Cutoff concentrations
Oxidants: 200 mg/L
Nitrites: 500 mg/L
Interpretation
For information see Adulterant Survey Algorithm.
Day(s) Performed
Monday through Saturday
Report Available
2 to 3 daysTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ADLTX | Adulterants Survey, CoC, U | 58715-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 36121 | Creatinine, U | 2161-8 |
| 36122 | Specific Gravity | 5810-7 |
| 36123 | pH | 2756-5 |
| 36124 | Oxidants | 58714-7 |
| 36125 | Nitrites | 32710-6 |
| 36126 | Comment | 48767-8 |
Forms
1. Chain of Custody Request is included in the Chain-of-Custody Kit (T282).
2. If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.
Additional Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| COCH | Chain of Custody Processing | No | Yes |
Special Instructions
Testing Algorithm
For more information see Adulterant Survey Algorithm.