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Test Code PCPMC Phencyclidine (PCP) Confirmation, Meconium

Advisory Information

For chain-of-custody testing, order PCPMX / Phencyclidine (PCP) Confirmation, 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.

Useful For

Detection of in utero to phencyclidine (PCP) exposure up to 5 months before birth

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Reporting Name

PCP Confirmation, Meconium

Specimen Type


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

Reject Due To

Other Grossly bloody reject, Pink OK Stool Diapers

Reference Values


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

Cutoff concentrations

PCP by LC-MS/MS: 10 ng/g

Day(s) and Time(s) Performed

Monday through Sunday; Varies

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


G0480 (if appropriate)


LOINC Code Information

Test ID Test Order Name Order LOINC Value
PCPMC PCP Confirmation, Meconium 26859-9


Result ID Test Result Name Result LOINC Value
89069 PCP Confirmation, Meconium 26859-9
29905 Interpretation 69050-3


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