Sign in →

Test Code LAB4225 11-nor-Delta-9-Tetrahydrocannabinol-9-Carboxylic Acid (Carboxy-THC) Confirmation, Meconium

Important Note

This test is only orderable by the laboratory.  To request this test in EPIC, please order LAB001 MAYO MISCELLANEOUS TEST.  Fill out appropriate prompts and request the Mayo test code listed above.

If you need further assistance, please contact the laboratory at 406-414-5010.

Additional Codes

Mayo Test Code: THCM

Useful For

Detecting in utero drug exposure to marijuana (tetrahydrocannabinol) up to 5 months before birth

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Meconium


Ordering Guidance


For chain-of-custody testing, order THCMX / 11-nor-Delta-9-Tetrahydrocannabinol-9-Carboxylic Acid (Carboxy-THC) 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
  Refrigerated  21 days
  Ambient  14 days

Reference Values

Negative

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

Cutoff concentration: 5 ng/g

Day(s) Performed

Monday through Sunday

Test Classification

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

CPT Code Information

80349

G0480 (if appropriate)

Report Available

2 to 3 days

Reject Due To

Grossly bloody Reject; Pink OK
Stool
Diapers		 Reject

Method Name

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

Forms

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