We just submitted our first harvest testing with them. I am giving an initial 5 stars because, I feel it’s important to let people know I have had a wonderful experience with them so far. Bless Jessica and the numerous calls she has gotten from me - her patience is astounding. Never once did I ever feel she was tired of listening to me as she walked me thru my first testing. I have yet to get my results but being nervous and unsure what to do it just made my confidence in Express more confident.

Stellar service from step 1 to test results in my inbox!Couldnt be more pleased. Wendy and her staff at Express have gone the extra mile to pick up samples, communicate during the process, and get it done as quickly as I could hope for.The fact that they are one of the best values when it comes to cost is just icing on the cake!Love these guys!

This place is outstanding, very clean, and well organized the staff is so knowledgeable about the industry! Only place I would trust if I was in need for lab testing and helpful information about lab results!! Their whole staff is friendly and professional and eager to help, you can tell they have a passion for the industry and love their jobs and the transportation manager is among one of the best people Ive ever had the privilege of dealing with!!

Express Toxicology has excellent customer service. I cannot say enough about this company. Their professionalism is refreshing, yet they always make you feel like a familiar face. They provide personalized service, with results you can trust.

Do not use. Bought a 10pack of tests, what a mistake to be trapped with this company. Random failures have been chalked up to “oops typed it wrong”. All of my product has since been tested at other labs and passed with much different numbers. Used the last of my test I had on file with them and they fail for pyrethrum (we do not use, and can be found in thc if you have bad lab practices) - look it up.I’m glad the omma will see my results from other labs to compare what these guys are putting out. A lab and grower need to be long term partners on a foundation of trust. Don’t waste your time here.

Definitely the most legitimate lab in Oklahoma. Excellent customer service and highly accurate testing. This lab gives growers and processors peace of mind they are producing and delivering top quality medicine!! Love them!

Great customer service! They walked me through the process to let me know exactly what I needed to ensure my business was compliant. Great turnaround time too!

Great service and pricing. Express sets the bar very high and is cutting edge with technology. Highly recommend!!

I highly recommend Express Toxicology Oklahoma, not only is the staff amazing but the turn around time is the best. Nothing but great experiences with them.

Great service, on time, walked me through the entire process. Ask for tour their facility is top notch!

Failed all my outdoor and indoor for salmonella. Took to another lab passed with flying colors. They also failed every outdoor entry for the Cowboy Cup 2020. Would not recommend, this isnt the first time theyve failed me and I went somewhere and passed again. I would have never went back but was in a hurry and forgot, was a 3000k mistake ill never make again. Dont waste your time, Ive talked to a lot of other growers and they wont go there either.

We are so excited to have found Express Toxicology services! Was very impressed to find they have 48-hour turn around time, was even more impressed when we got our results back in just 24!! Exceptional customer service as well! We look forward to continue doing business with ETS. :)

This is by far the most professional lab I’ve used in Oklahoma, they stay in contact, pick up samples or take walk ins, charge a reasonable price, get results back fast, and have bar codes you can label products with which pull up the lab results when scanned with a QR code scanner. 5 stars, they’re the only lab i use anymore

Reputation means everything in this field. These guys have an impeccable rep.

They took 7 grams from me for a terp/thc test. Now its been a week with no results. They send everything out. This lab is a joke.

They called me wanting my business. Told be 5 day turn around, its currently day 8. Im going to lose a client over them lying to me.

Good lab!