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Test Code LAB1232208 Phencyclidine (PCP) Confirmation, Meconium

Important Note

Mayo code is PCPMC

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Reporting Name

PCP Confirmation, Meconium

Specimen Type

Meconium


Ordering Guidance


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

Specimen Volume: 1 g (approximately 1 teaspoon)

Collection Instructions: Collect entire random meconium (newborn’s first bowel movements) specimen.


Reject Due To

Grossly bloody Reject; Pink OK
Stool Reject
Diapers Reject

Specimen Stability Information

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

Specimen Minimum Volume

0.3 g (approximately 1/4 teaspoon)

Day(s) Performed

Monday through Sunday

Specimen Retention Time

2 weeks

Report Available

2 to 3 days

Reference Values

Negative

 

Positive results are reported with a quantitative liquid chromatography tandem mass spectrometry result.

Cutoff concentration: 5 ng/g

Useful For

Detection of in utero drug exposure to phencyclidine up to 5 months before birth

CPT Code Information

G0480

83992 (if appropriate for select payers)

Clinical Toxicology CPT Code Client Guidance

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PCPMC PCP Confirmation, Meconium 92816-8

 

Result ID Test Result Name Result LOINC Value
89069 PCP Confirmation, Meconium 92816-8
29905 Interpretation 69050-3

Method Description

Meconium is mixed with internal standard and extracted with methanol. The methanolic extract is further processed by solid phase extraction. The extract is analyzed by liquid chromatography tandem mass spectroscopy.(Unpublished Mayo method)

Forms

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