Drugs of Abuse - Meconium
Label Mnemonic: MEC9
Epic Lab Code: LAB4840
Downtime Form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Meconium
Collection Medium:
Meconium
Minimum:
Meconium. All meconium (blackish material) excreted until milk/formula based stool (yellow-green) appears.

Preferred Minimum: 4 g or 3/4 inch cube on each side
Absolute Minimum: 2 g or 3/4 inch cube on each side
Turn Around Time:
1-4 days upon receipt at reference laboratory
Reference Range:
Drugs Covered and Cutoff Concentrations Drug Screen Confirmation Marijuana 30 ng/g 5 ng/g Cocaine 30 ng/g 20 ng/g Opiates 30 ng/g 20 ng/g Phencyclidine 15 ng/g 10 ng/g Amphetamines 30 ng/g 20 ng/g Barbiturates 75 ng/g 50 ng/g Methadone 40 ng/g 10 ng/g Benzodiazepines 75 ng/g 20 ng/g Buprenorphine 40 ng/g 20 ng/g
Interpretive Data:
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. Interpretive questions should be directed to the laboratory.

For medical purposes only; not valid for forensic use.

Note: If screen is positive, then confirmation by GC/MS and/or LC- MS/MS will be added.

Confirmation testing will be performed in the following order of priority:
Amphetamines (0.125 g sample required)
Cocaine (0.5 g sample required)
Opiates (0.125 g required)
Buprenorphine (0.125 g required)
Marijuana (0.125 g required)
Benzodiazepines (0.5 g sample required)
Methadone (0.125 g sample required)
Phencyclidine - PCP (0.5 g sample required)
Barbiturates (0.5 g sample required)
Methodology:
Qualitative Enzyme-Linked Immunosorbent Assay/Quantitative Gas Chromatography-Mass Spectrometry/Quantitative Liquid Chromatography- Tandem Mass Spectrometry
CPT Code:
80307 Screen; if positive add appropriate CPT code for drug confirmed: 80349 Marijuana; 80353 Cocaine; 80361 Opiates; 83992 Phencyclidine; 80324 Amphetamines; 80345 Barbiturates; 80358 Methadone; 80346 Benzodiazepine; 80348 Buprenorphine