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About Us

Oklahoma Compliance Testing Lab is an analytical testing laboratory based out of Tulsa, Oklahoma.

We are OMMA licensed and fully ISO 17025:2017 accredited for accurately measuring your product’s contents and screening for harmful toxins. With cutting-edge methods and state of the art equipment, we have been conducting testing on cannabis and cannabis-infused products since 2019.

OKCTL is home to a team of firm believers in customer service who strive to serve the state of Oklahoma with precision, timeliness, and professionalism. When you test with OKCTL, you can rest assured in the knowledge that you are receiving accurate, verified analysis you can trust.

Oklahoma Compliance Testing Lab LLC, Laboratory Testing, Tulsa, OK


OKCTL’s Laboratory Team includes highly trained Chemists and Microbiologists with specialties ranging from Analytical Chemistry to DNA detection.

Lab Technicians

OKCTL’s Lab Technicians work under the direction of our Analysts and assist in sample processing, maintenance, and Quality Control checks.

Quality Assurance

Each result is reviewed by our Quality Assurance department to ensure the highest level of confidence in the results published. Quality Assurance is just one part of our Quality Department, which follows the sample and ensures compliance from drop-off to publication.

Licensed and Accredited

OKCTL was proud to be one of the first cannabis laboratories licensed in the Tulsa area. Most recently, OKCTL celebrated our PJLA ISO/IEC 17025:2017 accreditation. We are in full compliance with all OMMA Requirements for Testing Laboratories.


OKCTL offers a complete portfolio of testing services. Our state-of-the-art laboratory and highly qualified team members enable us to complete a wide variety of testing services within a short timeframe without sacrificing quality.

Moisture & Water Activity Testing

Analyzes the moisture content and water activity levels of plant material, both of which affect shelf stability.

Foreign Material Screening

Detection of any foreign matter or other substances not intentionally added that may compromise safety or such as insects, plastic, glass, or metal shavings.

Cannabinoid Profiling (Potency Testing)

Potency testing is used to find out the strength of a base product such as trim, flower, concentrates, or extracts. Knowing the potency of a product is necessary for both proper labeling and dosage.

Terpene Profiling

Terpenes provide smell and flavor to almost all plants, not just cannabis. Different profiles will affect you in different ways, which plays an important role in choosing which medicine is right for you.

Residual Solvents Screening

When processed incorrectly or incompletely, residual amounts of solvents used during the extraction process can remain in the final material. Solvents are volatile chemicals that can cause a slew of health concerns when ingested, especially after being combusted and inhaled. Testing will indicate if further processing is needed prior to consumption or sale.

Heavy Metals Analysis

Heavy Metals are typically introduced through soil, water, or low-grade fertilizers. There is a high respiratory risk from combustion, and exposure can lead to metals poisoning. Current regulations require testing for Arsenic, Cadmium, Lead, and Mercury content.

Mycotoxin Detection

Mycotoxins are produced by certain types of mold. Exposure can result in serious health concerns, particularly when that consumption is chronic. These toxins are a prevalent concern for patients with weakened or compromised immune systems.

Pesticide Detection

Many pesticides are labeled as organic, and products such as bug bombs, flea and tick treatment, and other common lawn care products utilize pesticides as active ingredients. Cannabis plants are acidic and sponge-like, and easily leach pesticides from soil, nutrients, water, and even “drift” from a neighbor’s usage.

Microbial Impurities Analysis

Depending on what type of product you have tested, this panel will cover Total Yeast/Mold Count, Salmonella, Shiga-Toxin producing E.coli, Candida Albicans, Staphylococcus aureus, Pseudomonas aeruginosa, Aerobic Bacteria, Bile Tolerant Gram-Negative Bacteria, and/or Aspergillus Flavus, Fumigatus, Terreus, and Niger. Typically, these analytes are introduced by decomposing plant material or cross-contamination from soil, hands, or tools.


OKCTL is home to five individual departments which work together to ensure accurate, verifiable, and timely results. We focus on staff redundancy, cross-training, and continuing education to ensure each department operates at peak efficiency, both independently and together as a team.

General Chemistry

The Chemists and Technicians in this department provides Moisture and Water Activity Testing, Cannabinoid Profiling, Foreign Matter Screening, Terpene Profiling, and Residual Solvents Screening. This department is home to multiple HPLCs, GC-MS, GC-FIDs, Moisture Analyzers, and Water Activity Meters.


The Microbiologists in this department provide screening for Microbiological Impurities. This department is home to a state-of-the-art PathogenDx system, which utilizes DNA-based testing rather than the traditional “plate and wait” method. This means our Microbiologists are analyzing what is actively alive on the product, rather than what might grow on it in the future. Additionally, it cuts down the testing time significantly while being more accurate. In the event that a failing analyte is suspected, the sample is retested prior to reporting.

Pesticides & Mycotoxins

The Chemists in this department provide screening for thirteen pesticides, including Aflatoxins B1, B2, G1, G2 and Ochratoxin A content. Pesticide screening in Oklahoma cannabis is important as pesticides and other chemicals used on cannabis plants can be harmful to human health if they are not properly monitored and controlled.

This department is home to two Triple-Quadrupole LC-MS/MS instruments.

Heavy Metals

The Chemists and Technicians in our Heavy Metals department are responsible for testing and analyzing cannabis products for heavy metal contamination. Examples of heavy metals include lead, mercury, arsenic, and cadmium. Excessive exposure to heavy metals can be harmful to human health, so it is important to ensure that cannabis products do not contain excessive levels of heavy metals.

OKCTL has three ICP-MS instruments for analyzing samples for heavy metals.


The specialists in this department are tasked with confirming accuracy, traceability, reproducibility, and standardization. Our Quality Assurance Department ensures regular audits, gauge studies, and blind testing studies are conducted and analyzed for abnormalities. Additionally, each individual department has a Quality Control Member, a liaison who ensures that the appropriate duplicates, blanks, and spikes are ran throughout each testing run so that any abnormalities are isolated and corrected. This department is home to the individuals who generate your final Certificate of Analysis, keep pace with evolving regulations, and ensure compliance for both OMMA and ISO standards.



For additional information on sampling procedures and sample weights, please click here.

Potency Only

$40 / sample

  • Flower
  • Concentrate / Extract
  • Edibles

Terpene Only

$40 / sample

  • Flower
  • Concentrate / Extract
  • Edibles

Buy in Bulk & Save - Contact our Sales team today to discuss.

Frequently Asked Questioins

  • What do I need to drop-off a sample?

    A manifest, completed Sampling Field Log Document, and your OMMA/OBNDD numbers and Transport Agent Card. Our Drop-Off Checklist can be found here.

  • This varies by product type and testing. For all Full Compliances, a Primary and a Reserve sample are required do to OMMA regulations. Minimum weights based on product type and test can be found here.

  • Absolutely! Our license number is LAAA-N1FX-P5VY.

  • Fully so! Our accreditation number is 108270 and through PJLA.

  • Through email, via a third-party reporting software called Confident Cannabis. From the Confident Cannabis website, you will be able to access all Certificate of Analyses, Chain of Custody documents, invoices, and product stickers. Additionally, the Confident Cannabis website integrates with METRC, meaning that you can sync information from both platforms.

  • Testing with OKCTL is more than a transaction, we prefer to develop a relationship with each of our clients and design testing services / packages that fit your specific needs and volume. Reach out to our Sales Director today for more information.

    Brandon Fountain, Sales Director
    Phone: 918.872.7015, Ext: 1004


Our Address

3158 South 108th East Ave, Suite 290, Tulsa, OK 74146

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