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San Diego, CA 92121
United States

American Testing Lab Inc. is a full service ISO 17025 accredited testing laboratory that offers advanced quality control and development services for a wide range of industries. 

Every minute of every day, our pretested ready-to-run GC, GC/MS, LC and ICP/MS instruments, validated testing methods, and trained scientists are aimed at helping you. Our services will improve the sensitivity, accuracy, and speed of your analytical routine laboratory testing; and stay a step ahead of the challenges in this complex market.

We provide a variety of microbiological laboratory testing and analysis services. They include:

  • Antibiotic-microbial assays
  • Antimicrobial effectiveness testing (AET)
  • Microbial limit tests
  • Pathogen detection
  • Bioburden analysis; TAMC, TYMC
  • Disinfectant efficiency testing
  • Water testing
  • Vitamins
  • Bacterial endotoxin test
  • Methods development and validation
  • Particle size analysis
  • Microbial identification (aerobic & anaerobic bacteria, yeasts, molds)
  • Sterility testing


  • UPLC, HPLC, GC, and IC analyses
  • Process and cleaning validations
  • Container/packaging laboratory testing
  • Physical and wet chemical analysis
  • Residual solvents
  • Stability storage and laboratory testing
  • Method development and validation
  • API Characterization
  • Total organic carbon (TOC)
  • Dissolution studies
  • Spectroscopy
  • Vitamin assays
  • Antibiotic assays
  • Enzymatic laboratory testing
  • Protein/Nitrogen analysis
  • Gel strength
  • Identification of impurities with LC-MS (Q-TOF) and GC-MS

Method Development and Validation Services

Our services range from the development of new analytical methods to remediation (optimization or improvement) of outdated procedures.

Once a method is developed, validation protocols are prepared and experiments are executed according to FDA, ISO 17025 and ICH guidelines for method validation. Our scientists are experienced in validating not only chromatographic procedures, but a wide range of other analytical testing techniques which include, but are not limited to:

  • Titration and colorimetric techniques
  • Headspace GC/MS
  • HPLC and IC

This wide capacity of analytical testing and methodological experience allows us to quickly generate protocols that meet regulatory demands. Our goal is to help you stay efficient and minimize mutual efforts.

In addition our Solutions Services include:  Pharmaceutical Testing, Cosmetic Product Testing, Nutraceutical Testing, Nutrition Label Analysis and Food Chemical Codex Testing FCC Food Grade.


Food Chemical Codex Testing | American Testing Lab Inc.

Food Chemical Codex Testing

Food Testing & Analysis - San Diego Nutrition Label Analysis | American Testing Lab Inc.

Nutrition Label Analysis | American Testing Lab Inc.

Nutraceutical Testing | American Testing Lab Inc.

Nutraceutical Testing

Cosmetic Testing Laboratory - Cosmetic Testing In San Diego | American Testing Lab Inc.

Cosmetic Testing Laboratory

Pharmaceutical Testing Lab - San Diego Pharmaceutical Testing | American Testing Lab Inc.

Pharmaceutical Testing Lab

Testing Laboratory Services - San Diego Testing Methods | American Testing Lab Inc.

Testing Laboratory Services

Chemistry Testing Lab - San Diego Chemistry Lab | American Testing Lab Inc.

Chemistry Testing Lab

Microbiology Testing - Microbiology Testing San Diego | American Testing Lab Inc.

Microbiology Testing