To stay current with today’s most relevant designer drugs and synthetic cannabinoids, Infiniti Labs is pleased to announce new Synthetic Cannabinoids and Designer Drug-Bath Salts have been added to the test menu. Beginning April 8, 2021, the new drugs will be included when choosing the Synthetic Cannabinoid and Designer Drug-Bath Salt panels. These changes will be reflected immediately with online ordering. Updated paper requisitions will be provided as soon as possible. The following is the updated list of drugs included in each panel:

Synthetic Cannabinoids (K2/Spice)
Analyte Cutoff (ng/mL) Upper Limit of Reportable Range (ng/mL)
4FMDMB 4 80 New
ABPINACA 4 80 New
ADBICA 4 80 New
Designer Drugs / Bath Salts
Analyte Cutoff (ng/mL) Upper Limit of Reportable Range (ng/mL)
Alpha-PVP 4 80
Acetyl Fentanyl 1 20 New
Butyryl Fentanyl 1 20 New
Carfentanil 1 20 New
MDPV 20 400
Mephedrone 20 400
Methylone 20 400
Mitragynine 4 80
N-Ethylpentylone 20 400 New
U-48800 2 40 New

The following drugs will be removed from our Synthetic Cannabinoid and Designer Drug-Bath Salt panels effective April 8th as well:

  • AM-2201-4OH Pentyl
  • Buphedrone
  • JWH-18 Penatnoic Acid
  • JWH-18 4-OH Pentyl
  • JWH-25-N4-OH Pentyl
  • JWH-73 3-OH Butyl
  • JWH 73 Butanoic Acid

Our goal is to continue providing superior science and excellent customer service while meeting your Toxicology testing needs. If you have any questions or concerns, please contact your Infiniti Labs representative or our Client Services Team at 813-886-2616.

Effective April 1, 2021, the following drug compounds will be removed from our test menu:

Urine confirmation testing Oral Fluid confirmation testing Urine drug screen
Fluphenazine Aripiprazole Propoxyphene
Flurazepam Fluphenazine
MDEA Haloperidol
Propoxyphene Lurasidone
Zaleplon MDA

Important Notes:

  • Specimen collection and transportation requirements remain the same
  • Test codes, test panel names and CPT codes remain the same
  • Turnaround times will not be affected

Our goal is to continue providing superior science and excellent customer service while meeting your Toxicology testing needs. If you have any questions or concerns, please contact your Infiniti Labs representative or our Client Services team at 813-886-2616.

*Samples received after April 1, 2021 will reflect these changes.

Methamphetamine is a central nervous system stimulant that is abused recreationally. It can also be prescribed as a stimulant or appetite suppressant. Methamphetamine exists in two different forms: levo-methamphetamine (l-methamphetamine) and dextro-methamphetamine (d-methamphetamine). Each has the same chemical formula, but a slight variation in chemical structure produces different properties for each isomer.

Isomer d-methamphetamine is more stimulating and psychoactive while l-methamphetamine is less central nervous system -active, vasoconstrictive and is available over-the-counter as the active ingredient of the Vick’s inhaler as well. This leads to a higher abuse potential for d-methamphetamine and lower abuse potential for l-methamphetamine. The D/L isomer test will narrow down the potential sources of a methamphetamine positive result.

Drugs likely responsible for 95-100%
d-methamphetamine results:

  • Illicit methamphetamine
  • Methamphetamine (Desoxyn®)
  • Benzphetamine (Didrex®)

Drugs likely responsible for 0-5% d-methamphetamine or 95-100% l-methamphetamine results:

  • Selegiline (Eldepryl®, EMSAM®, Zelapar®)
  • Over-the-counter vapor inhaler containing levmetamfetamine (Vick’s Inhaler®)
  • Illicit methamphetamine (uncommon)

Drugs NOT responsible for any positive methamphetamine results:

  • Pseudophedrine (Sudafed®) products
  • Amphetamine/ Dextroamphetamine products (Adderall®, Dexedrine®, Vyvanse®)
  • Phentermine (Adipex-P®, Lomaira®, Qsymia®)
  • Methylphenidate products (Concerta®, Ritalin®)
  • Other OTC or prescription products

D-Isomer Percentage