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Test Code CDA7X Drug Abuse Survey with Confirmation, Panel 9, Chain of Custody, Random, Urine

Useful For

Detecting drug abuse involving alcohol, amphetamines, barbiturates, benzodiazepines, cocaine, methadone, opiates, phencyclidine, and tetrahydrocannabinol

 

This chain-of-custody test is intended to be used in a setting where the test results can be used definitively to make a diagnosis.

 

This test is not intended for use in employment-related testing.

Additional Tests

Test ID Reporting Name Available Separately Always Performed
COCH Chain of Custody Processing No Yes
ADLTX Adulterants Survey, CoC, U Yes Yes

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
THCX Carboxy-THC Confirmation, CoC, U Yes No
PCPX Phencyclidine Confirmation, CoC, U Yes No
MTDNX Methadone Confirmation, CoC, U Yes No
COKEX Cocaine and metabolite Conf, CoC, U Yes No
BNZX Benzodiazepines Conf, CoC, U Yes No
BARBX Barbiturates Confirmation, CoC, U Yes No
AMPHX Amphetamines Confirmation, CoC, U Yes No
OPATX Opiate Confirmation, CoC, U Yes No
ETOHX Ethanol, CoC, U No No

Testing Algorithm

Testing begins with screening tests for alcohol and drugs of abuse. Positives are confirmed and quantitated by definitive methods (gas chromatography with flame ionization detector for ethanol; gas chromatography mass spectrometry for barbiturates, cocaine and metabolites, methadone, and phencyclidine) at an additional charge. Amphetamines, benzodiazepines, opiates, and tetrahydrocannabinol metabolite that screen positive will be quantified with liquid chromatography tandem mass spectrometry at an additional charge.

 

Adulterants testing will be performed on all chain-of-custody urine samples as per regulatory requirements.

Reporting Name

Confirmed Drug Abuse Panel9, CoC, U

Specimen Type

Urine


Specimen Required


Container/Tube: Chain-of-Custody Kit (T282) containing the specimen containers, seals, and documentation required

Specimen Volume: 30 mL

Collection Instructions: Collect specimen 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 30 mL will compromise our ability to perform all necessary testing.


Specimen Minimum Volume

15 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 7 days
  Frozen  14 days

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Clinical Information

This assay was designed to test for and confirm the following drugs, by either gas chromatography-mass spectrometry (GC-MS), gas chromatography flame ionization detection (GC-FID), or liquid chromatography tandem mass spectrometry (LC-MS/MS):

 

-Amphetamines

-Barbiturates

-Benzodiazepines

-Cocaine

-Ethanol

-Opiates

-Methadone

-Phencyclidine

-Tetrahydrocannabinol

 

This test uses the simple screening technique which involves immunoassay testing for drugs by class. All positive immunoassay screening results will be confirmed by the definitive assay available and is described in each individual reflex test (eg, AMPHU / Amphetamines Confirmation, Random, Urine). All positive screening results are confirmed by either GC-MS, GC-FID, or LC-MS/MS and quantitated before a positive result is reported.

 

Chain of custody is a record of the disposition of a specimen to document who collected it, who handled it, and who performed the analysis. When a specimen is submitted in this manner, analysis will be performed in such a way that it will withstand regular court scrutiny. 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 under the control of personnel involved with testing the specimen at all times; this control implies that the opportunity for specimen tampering would be limited.

Reference Values

Negative

Screening cutoff concentrations

Amphetamines: 500 ng/mL

Barbiturates: 200 ng/mL

Benzodiazepines: 100 ng/mL

Cocaine (benzoylecgonine-cocaine metabolite): 150 ng/mL

Ethanol: 10 mg/dL

Methadone metabolite: 300 ng/mL

Opiates: 300 ng/mL

Phencyclidine: 25 ng/mL

Tetrahydrocannabinol carboxylic acid: 50 ng/mL

This report is intended for use in clinical monitoring or management of patients. It is not intended for use in employment-related testing.

Interpretation

A positive result indicates that the patient has used the drugs detected in the recent past. See individual tests (eg, AMPHX / Amphetamines Confirmation, Chain of Custody, Random, Urine) for more information.

 

For information about drug testing, including estimated detection times, see Drugs of Abuse Testing.

Cautions

The test does not screen for drug classes other than those listed above. More comprehensive screening is available using the serum or urine drug screens (DSSX / Drug Screen, Prescription/Over the Counter, Chain of Custody, Serum or PDSUX / Drug Screen, Prescription/Over the Counter, Chain of Custody, Urine).

Method Description

The amphetamines, barbiturates, benzodiazepines, cocaine, methadone metabolite, opiates, phencyclidine, and tetrahydrocannabinol metabolite assays are based on the kinetic interaction of microparticles in a solution (KIMS) as measured by changes in light transmission. In the absence of sample drug, soluble drug conjugates bind to antibody-bound microparticles, causing the formation of particle aggregates. As the aggregation reaction proceeds in the absence of sample drug, the absorbance increases. When a urine sample contains the drug in question, this drug competes with the drug derivative conjugate for microparticle-bound antibody. Antibody bound to sample drug is no longer available to promote particle aggregation, and subsequent particle lattice formation is inhibited. The presence of sample drug diminishes the increasing absorbance in proportion to the concentration of drug in the sample. Sample drug content is determined relative to the value obtained for a known cutoff concentration of drug.(Package inserts: EDDP Specific Urine Enzyme Immunoassay. Immunalysis; 09/2018; AMPS2 cobas. Roche Diagnostics; V 10.0 09/2018; BARB cobas. Roche Diagnostics; V 13.0 09/2021; THC2 cobas. Roche Diagnostics; V 13.0 03/2022; BNZ2 cobas. Roche Diagnostics; V 2.0 04/2024; COC2 cobas. Roche Diagnostics; V 9.0 03/2019; ETOH2 cobas. Roche Diagnostics; V 16.0 06/2022; OPI2 cobas. Roche Diagnostics; V 16.0 01/2022; PCP cobas. Roche Diagnostics; V 13.0 09/2021)

 

ETOHX Confirmation

Specimens are analyzed and quantified by headspace gas chromatography with flame ionization detection.(Baselt RC. Disposition of Toxic Drugs and Chemicals in Man, 10th edition, Biomedical Publications; 2014:2211)

Day(s) Performed

Monday through Saturday

Report Available

2 to 3 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

80307

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CDA7X Confirmed Drug Abuse Panel9, CoC, U 87428-9

 

Result ID Test Result Name Result LOINC Value
36262 Alcohol 42242-8
36253 Amphetamines 43983-6
36258 Barbiturates 70155-7
36259 Benzodiazepines 14316-4
36254 Cocaine 43984-4
36260 Methadone metabolite 41858-2
36255 Opiates 70151-6
36256 Phencyclidine 14310-7
36257 Tetrahydrocannabinol 14312-3
36261 Chain of Custody 77202-0

Method Name

Enzymatic Assay/Immunoassay