Quality Service through

Experience & Excellence


ARL Bio Pharma provides analytical and microbiological testing for the pharmaceutical industry. Our laboratory works with pharmaceutical companies, compounding and hospital pharmacies, drug manufacturers, and raw material suppliers bringing excellence to pharmaceutical sciences.




ARL Bio Pharma provides analytical and microbiological testing for compounding pharmacies, outsourcing facilities, and health-system pharmacies. Our laboratory partners with industry suppliers bringing excellence to the compounding industry.
Services Offered:


  • Potency Determination
  • BUD and Stability Studies
  • Sterility
  • Endotoxin
  • Fungal
  • Microbial Identification
  • Microbial Enumeration Tests
  • Tests for Specified Organisms
  • Antimicrobial Effectiveness Testing
  • Particulate Matter by Light Obscuration
  • Particulate Matter by Microscopy
Raw Material

Raw Material

ARL Bio Pharma qualifies drug substances, excipients, and drug products to meet pharmacopeia specifications.
Services Offered:


  • Identification by IR
  • Identification by UV
  • Specific Gravity
  • Water – Methods 1a, 1b, 2 and 3
  • Residual Solvents
  • Melting Point / Melting Range
  • Loss on Drying
  • Residue on Ignition
  • Assay – HPLC, UV, Titration
  • Heavy Metals
  • pH
  • Viscosity
  • USP / NF (United States Pharmacopeia) testing
  • EP (European Pharmacopeia) testing
  • JP (Japanese Pharmacopeia) testing


ARL provides full laboratory services for pharmaceutical and biotechnology companies. Laboratory services include testing for New Drug Application (NDA), Abbreviated New Drug Application (ANDA), medical devices (510K) and over-the-counter products.
Services Offered:


  • Stability Studies
  • Compatibility Studies
  • Raw Material Testing
  • Dissolution Testing
  • Microbial Identification
  • Bioequivalence Studies
  • Pre-clinical and Clinical Analytical Testing


ARL Bio Pharma provides comprehensive services to solve challenging drug investigations. These services are unique and specialized in pharmaceutical, toxicological, regulatory support, and research and development.
Services Offered:


  • Chemical Analysis
  • Biological Analysis
  • Drug Diversion Testing
  • Complaint Sample Testing
  • Product Contamination
  • Litigation Support
  • Patent Infringement
  • Literature Research and Review
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Industrial Hemp and CBD

ARL Bio Pharma tests industrial hemp and cannabidiol (CBD) to meet industry quality specifications.

  • Potency Testing
  • Pesticides
  • Heavy Metals
  • Microbiological Examination of Nonsterile Products: Tests for Specified Microorganisms <62>
  • Microbiological Examination of Nonsterile Products: Microbial Enumeration Tests USP <61>
  • Stability Studies


Endotoxin Limits

How are endotoxin limits calculated? How do my endotoxin test results relate to those limits?
Endotoxin limits for drug products specify the amount of endotoxin that can safely be present. Limits are based on human tolerance and generally specified in the USP monograph or if no monograph exists, calculated via USP <85> Bacterial Endotoxin Test. The testing limit calculation considers:
Route of administration
Dose of the product per kilogram of body weight (which should include the maximum bolus dose and the minimum patient weight)
Duration (time) of administration
Once a limit is determined, USP <85> allows a testing facility flexibility to determine the appropriate test dilution to reduce drug sample properties that interfere with the test. Using the endotoxin limit and the assay's sensitivity, a maximum valid dilution (MVD) is calculated. The MVD provides the maximum dilution possible to obtain a result and maintain the sensitivity necessary to determine a pass or fail. For example, if a sample is submitted with an endotoxin test limit of NMT 14 EU/mL and the MVD is determined to be 1400, then the product concentration can be diluted no further than 1:1400 and still generate a result with the appropriate sensitivity.
The test result is calculated by the assay software using the test dilution and assay sensitivity. In a case where no endotoxins are present, for example, a 1:1000 dilution was used and no presence of endotoxin was detected, a result of <10 EU/mL is reported. A result which includes a "less than" value does not indicate that the actual endotoxin value is near the number reported, only that the dilution factor used allowed for that level of sensitivity in results calculation. This means that results of <10 EU/mL and <4 EU/mL both show no presence of endotoxin at the dilution with which they were tested; and neither result offers any indication of the exact level of endotoxin present below the values reported.
If you would like to always receive the same result when endotoxins are not detected, a validation of the endotoxin test method is required.
Contact ARL at info@arlok.com or 800-393-1595 to schedule your endotoxin test method validation.

Hand Sanitizer Guidance...

Hand sanitizers are regulated as over the counter (non-prescription) drugs by the U.S. Food and Drug Administration. The FDA has issued warnings to consumers about hand sanitizer products containing methanol. According to the CDC, Alcohol-based hand sanitizers should only contain ethanol or isopropanol, but some products have been found to contain methanol. Ethanol is a valid active ingredient, but methanol, even in small amounts, can lead to patient adverse events.