ARUP's Laboratory Test Directory

Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium : 0092316

Mnemonic: CONFTHC M

Methodology: Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed: Sun-Sat
Reported: 1-4 days
Specimen Required: Collect: All meconium (blackish material) excreted until milk/formula based stool (yellow-green) appears.

Specimen Preparation: Transport 1 g (equivalent to 1/2 inch cube) for each separate confirmation required. (Min: 0.5 g or 1/4 inch cube)

Storage/Transport Temperature: Room temperature.

Stability (collection to initiation of testing): Ambient: 1 week; Refrigerated: 3 months; Frozen: 1 year
Interpretive Data: Drugs Covered: 9-carboxy-THC
Positive cutoff: 5 ng/g

Meconium begins to form between the 12th and 16th week of gestation. Meconium drug testing can detect maternal drug use during the last 4 to 5 months of pregnancy. A negative result does not exclude the possibility that a mother used drugs during pregnancy. Detection of drug use depends on the quantity and quality of the specimen tested as well as the pattern and frequency of drug(s) used by mother. The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.

For medical purposes only; not valid for forensic use.

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 82542
Cross References: 9-Carboxy-THC (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium), Cannabinoids (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium), Cannabis (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium), Dronabinol (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium), Marijuana (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium), Marinol (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium), THC (Drugs of Abuse Confirmation/Quantitation - Cannabinoids (Marijuana) - Meconium)