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Test Code AMPHM Amphetamine-Type Stimulants Confirmation, Meconium

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Meconium


Ordering Guidance


For chain-of-custody testing, order AMPMX / Amphetamine-Type Stimulants Confirmation, Chain of Custody, Meconium.



Specimen Required


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

Container/Tube: Stool container

Specimen Volume: 1 g (approximately 1 teaspoon)

Collection Instructions: Collect entire random meconium specimen.


Specimen Minimum Volume

0.3 g (approximately 1/4 teaspoon)

Specimen Stability Information

Specimen Type Temperature Time Special Container
Meconium Frozen (preferred) 28 days
  Ambient  28 days
  Refrigerated  28 days

Reference Values

Negative

Positives are reported with a quantitative liquid chromatography tandem mass spectrometry (LC-MS/MS) result.

 

Cutoff concentrations for LC-MS/MS testing:

Amphetamine: 20 ng/g

Methamphetamine: 20 ng/g

3,4-Methylenedioxyamphetamine: 20 ng/g

3,4-Methylenedioxyethylamphetamine: 20 ng/g

3,4-Methylenedioxymethamphetamine: 20 ng/g

Day(s) Performed

Monday through Sunday

CPT Code Information

80324

80359

G0480 (if appropriate)

Report Available

2 to 3 days

Specimen Retention Time

2 weeks

Reject Due To

Grossly bloody Reject; Pink OK
Stool
Diapers
Reject