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Test Code DASM4 Drugs of Abuse Screen, Meconium 4

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
AMPHM Amphetamines, Confirmation, M Yes No
COKEM Cocaine and Metabolites, Confirm, M Yes No
OPATM Opiate Confirmation, M Yes No
THCM Carboxy-THC Confirmation, M Yes No

Testing Algorithm

Testing begins with immunoassay screen. Positives are confirmed and quantitated by liquid-chromatography/tandem-mass spectrometry (LC-MS/MS) at an additional charge.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Meconium


Advisory Information


For chain-of-custody testing, order DSM4X / Drugs of Abuse Screen 4, Chain of Custody, Meconium.



Specimen Required


Supplies: Stool container, Small (Random), 4 oz (T288)

Container/Tube: Stool container (T288)

Specimen Volume: 1 g (approximately 1 teaspoon)

Collection Instructions: Collect entire random meconium specimen.


Specimen Minimum Volume

0.45 g (approximately 0.5 teaspoon)

Specimen Stability Information

Specimen Type Temperature Time Special Container
Meconium Frozen (preferred) 14 days
  Refrigerated  24 hours

Reference Values

Negative

Positives are reported with a quantitative LC-MS/MS result.

Cutoff concentrations

Amphetamines by ELISA: 100 ng/g

Methamphetamine by ELISA: 100 ng/g

Benzoylecgonine (cocaine metabolite) by ELISA: 100 ng/g

Opiates by ELISA: 100 ng/g

Tetrahydrocannabinol carboxylic acid (marijuana metabolite) by ELISA: 20 ng/g

Day(s) and Time(s) Performed

Monday through Saturday; Varies

CPT Code Information

80307

See individual reflex tests for appropriate CPT codes

Reject Due To

Other Grossly bloody reject, Pink OK Stool Diapers

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.