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Howdy, Thanks for reaching out with this inquiry. We do offer multiple levels off the shelf of adulterant controls that cover all but the Glutaraldehyde. I attached some information on what is in each as well as your pricing below. We also specialize in custom controls and make a bunch of custom validity QC’s for other labs. Doing a custom we can incorporate whatever you like in each control. If your interested in exploring this lets hop on a quick call to review your needs and usage to get you quoted. You can book a time that fits your schedule here: https://calendly.com/ahartmann-utak/30min Part Description Form Matrix mL per vial UOM Code Base Price 17010 VALIDITY CONTROL 1 Liquid Adulterant 25 EA 55.6 17011 VALIDITY CONTROL 2 Liquid Adulterant 25 EA 55.6 17012 VALIDITY CONTROL 3 Liquid Adulterant 25 EA 55.6 17013 VALIDITY CONTROL 4 Liquid Adulterant 25 EA 55.6 17014 VALIDITY CONTROL 5 Liquid Adulterant 25 EA 55.6 Thank you, Andrew Hartmann Business Development Manager – 25020 Avenue Tibbitts Valencia, CA 91355 – D +1.661.567.0667 P +1.888.UTAK.LAB F +1.661.294.9272 – Book a Meeting with Me https://calendly.com/ahartmann-utak/30min utak.com From: Golden Toxicology <staff.goldentoxicology@gmail.com> Sent: Thursday, November 20, 2025 2:20 PM To: Andrew Hartmann <ahartmann@utak.com> Subject: Re: Your lab must like our pee! Hello Andrew, We are looking for QC for our specimen validity strips. We test for Creatinine, Nitrites, Oxidants, pH, Specific Gravity, and Glutaraldehyde. The QC we were using had 2 levels (one normal for each test, and one abnormal). Is that something you all provide and have in stock? On Tue, Oct 7, 2025 at 7:14 AM Andrew Hartmann <ahartmann@utak.com> wrote: Hey Jesse, I hope the start of pumpkin spice season is treating you well. I noticed your lab has been using our Drug Free Urine for more than a decade now, but we have never seen you try our QC’s. I was hoping to connect with someone on your team to get some insights into how you are using our product, and what your team does for controls. Not a sales call, rather a genuine interest to learn how our products are used, and the different ways labs handle there controls. Do you think there is a time in the next week or two we could connect for a brief chat? You can book a time that fits your schedule here. Looking forward to connecting,