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Test Name:
Drug Screen, Gastric Aspirate

• SBMF No:
  31007
• Performance Lab Name:
  Toxicology
• Test Mnemonic:
  GDS
• ABN:
  May be required – Medical Necessity
• CPT Code:
  80100; 80101x15
  

  ---

  Medicare: G0431; G0434
• LOINC Code:
  12287-9
• Test Includes:
  acetaminophen, acetylmorphine, alprazolam, amitriptyline, amphetamine class, amobarbital, barbiturates, benzodiazepine class, brompheniramine, bupropion, butabarbital, butalbital, carbamazepine, carisoprodol, chlordiazepoxide, chlorpheniramine, clomipramine, clonazepam, clorazepate (as nordiazepam), cocaine metabolite, codeine, cyclobenzaprine, desalkylflurazepam, dextromethorphan, diazepam, dihydrocodeine, diltiazem, diphenydramine, doxepin, doxylamine, ephedrine/pseudoephedrine, ethanol, ethchlorvynol, ethosuximide, flurazepam, fluoxetine, glutehimide, guaifensin, hydrocodone, hydromorphone, hydroxyzine, ibuprofen, imipramine, lidocaine, lorazepam, MDA, MDMA, meperidine, meprobamate, methadone, methamphetamine, methaqualone, metoprolol, morphine, NAPA, naproxen, nordiazepam, nortriptyline, opiate class, oxycodone, pentazocine, pentobarbital, phencyclidine, phenobarbital, phentermine, phenylpropanolamine, phenytoin, primidone, procainamide, promethazine, propoxyphene, pseudophedrine/ephedrine, salicylate, secobarbital, sertraline, temazepam, THC (marijuana metabolite), theophylline, propranolol, thioridazine, tramadol, trazodone, trimipramine, tripelennamine, venlafaxine, verapamil
• Also Known As:
  Gastric Analysis Drug Screen
• Spec Type:
  Gastric aspirate
• Spec Container:
  Plastic container with tightly fitting lid
• Pref Vol:
  10.0 mL
• Min Vol:
  6.0 mL
• Fasting:
  No
• Spec Collect:
  Collected by physician or nursing personnel
  Methods of collection vary and several different transport containers may be used
• Spec Store Transport:
  Refrigerated
• Spec Stability:
  1 week refrigerated (2-8°C)
• Spec Remarks:
  Optimum results obtained when sample collected within 4 hours of suspected ingestion
• Methodology:
  Gas Chromatography/Mass Spectrometry (GC/MS) [High Complexity]
  Enzyme Immunoassay (EIA) [Moderate Complexity]
  Color Spot Tests [Moderate Complexity]
• Use:
  Detect drug use
• Clinical Significance:
  Ingestion of drugs may be detectable by analysis of the gastric fluid. Drugs or drug metabolites may be detected by a variety of techniques. This procedure utilizes the techniques of Gas Chromatography/Mass Spectrometry (GC/MS), Gas Chromatography (GC), Enzyme Immunoassay (EIA), and color spot tests. The lower limit of detection for most drugs detectable by the procedure ranges from 0.5 to 2.0 mcg/mL. The EIA test is generally more sensitive and may have lower limits of detection. EIA results may be reported as being positive for a drug class, since the EIA technique does not necessarily identify a specific drug (e.g., Opiates). This procedure can detect most drugs of abuse, many prescription drugs, and many over-the-counter medications. Not all drugs are detectable by this procedure. In particular, it should be noted that LSD, insulin, vitamins, and most antibiotics are not detectable by this procedure. This drug test does not utilize forensic procedures. It is intended for medical purposes.
• Reference Range:
  

  DRUG SCREEN GASTRIC:
  Gast Drug Sc
  	Specimen: GASTRIC  In addition to drug screening by GC/MS, color tests (CT),  immunoassay (IA) tests and ethanol analysis are routinely  performed.  Immunoassay, color tests and ethanol analysis produced  the following results:
  	DRUG Amphetamine class Barbiturates Benzodiazepine class Cocaine metabolite Methadone Methaqualone Opiate class Oxycodone PCP Propoxyphene THC (marijuana metabolite)          Salicylate Acetaminophen Ethchlorvynol     Ethanol	RESULT Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative Negative     Negative Negative Negative     Negative	IA CUTOFF 500 ng/mL 200 ng/mL 200 ng/mL 300 ng/mL 300 ng/mL 300 ng/mL 300 ng/mL 300 ng/mL 25 ng/mL 300 ng/mL 20 ng/mL   CT CUTOFF 50 mcg/mL 10 mcg/mL 0.1 mcg/mL        ETHANOL CUTOFF 40 mg/dL
  	Immunoassay and color test results are not routinely confirmed. Ethanol is confirmed by gas chromatography.

  GC/MS screening produced the following results:
                                    No drugs detected

  List of drugs screened for by GC/MS:
  acetaminophen, acetylmorphine, alprazolam, amitriptyline, amphetamine, amobarbital, brompheniramine, bupropion, butabarbital, butalbital, carbamazepine, carisoprodol, chlordiazepoxide, chlorpheniramine, clomipramine, clonazepam, clorazepate (as nordiazepam), cocaine, codeine, cyclobenzaprine, desalkylflurazepam, dextromethorphan, diazepam, dihydrocodeine, diltiazem, diphenydramine, doxepin, doxylamine, ephedrine/pseudoephedrine, ethosuximide, flurazepam, fluoxetine, glutehimide, guaifensin, hydrocodone, hydromorphone, hydroxyzine, ibuprofen, imipramine, lidocaine, lorazepam, MDA, MDMA, meperidine, meprobamate, methadone, methamphetamine, methaqualone, metoprolol, morphine, NAPA, naproxen, nordiazepam, nortriptyline, oxycodone, pentazocine, pentobarbital, phencyclidine, phenobarbital, phentermine, phenylpropanolamine, phenytoin, primidone, procainamide, promethazine, propoxyphene, pseudophedrine/ephedrine, secobarbital, sertraline, temazepam, theophylline, propranolol, thioridazine, tramadol, trazodone, trimipramine, tripelennamine, venlafaxine, verapamil.

  Limit of detection for most drugs = 1 mcg/mL.
  Other drugs not listed may be detected and reported.

  To discuss detectability of specific drugs by these procedures or to inquire about the availability of additional quantitative testing for specific drugs, please call the Toxicology laboratory.

• Day Run:
  Mon-Fri
• Time Run:
  2:00 pm
• Time Reported:
  2-5 days
• Test Type:
  TOX-TDM