ARUP's Laboratory Test Directory

0092516: Drugs of Abuse Panel, Meconium - Screen with Reflex to Confirmation/Quantitation

Test Mnemonic: MEC 9
Methodology: Enzyme-Linked Immunoassay/Gas Chromatography-Mass Spectrometry/Liquid Chromatography-Tandem Mass Spectrometry

Performed: Sun-Sat

Reported: 1-4 days

Specimen Required:  
Collect: Meconium. All meconium (blackish material) excreted until milk/formula based stool (yellow-green) appears.

Transport: All meconium available (4 g is preferred) at 20-25°C. (Min: 2 g or 3/4 inch cube on each side)

Stability: Ambient: 1 week; Refrigerated: 3 months; Frozen: 1 year

Reference Interval:
 
Drugs Covered and Cutoff Concentrations
Drug Screen Confirmation
Marijuana
  9-carboxy-THC 		30 ng/g 10 ng/g
Cocaine
  Cocaine
  Benzoylecgonine
  m-hydroxybenzoylecgonine
  Cocaethylene 		30 ng/g 20 ng/g
Opiates
  Codeine
  Morphine
  6 - acetylmorphine
  Hydrocodone
  Hydromorphone
  Oxycodone 		30 ng/g 2 ng/g
Phencyclidine 15 ng/g 10 ng/g
Amphetamines
  Amphetamine
  Methamphetamine
  Methylenedioxymethamphetamine (MDMA-Ecstasy)
  Methylenedioxyamphetamine (MDA) 		30 ng/g 20 ng/g
Barbiturates
  Butalbital
  Amobarbital
  Pentobarbital
  Secobarbital
  Phenobarbital 		75 ng/g 50 ng/g
Methadone and metabolite 40 ng/g 10 ng/g
Benzodiazepines
  Alprazolam
  Alpha-hydroxyalprazolam
  Clonazepam
  7-Amino Clonazepam
  Diazepam
  Alpha-hydroxyethylflurazepam
  Lorazepam
  Nordiazepam
  Oxazepam
  Temazepam
  Alpha-hydroxytriazolam 		75 ng/g 20 ng/g
Propoxyphene and metabolite 75 ng/g 10 ng/g

Interpretive Data:
Drugs Covered: codeine, dihydrocodeine, morphine, 6 - acetylmorphine, hydrocodone, oxycodone, oxymorphone
Cutoff Concentrations: Screen: 30 ng/mL; Confirmation: 2 ng/mL
For medical purposes only; not valid for forensic use



Note:
Screen-positive specimens are automatically confirmed by GC/MS or LC-MS/MS, additional charges may apply.
If specimen screens positive, then the confirmation test for the drug class will be added.

CPT Code(s):
80101 x9 Screen; if positive add appropriate CPT code for drug confirmed: 82542 Marijuana; 82520 Cocaine; 83925 Opiates; 83992 Phencyclidine; 82145 Amphetamines; 82205 Barbiturates; 83840 Methadone; 80154 Benzodiazepine; 83925 Propoxyphene

 

 

 
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