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Hi Ash, Great to hear from you! I hope fall is treating you well. UTAK has discontinued all but 1 of our stock screening controls. Due to the variation in customers cut-offs and analyte panels we do these as custom QC now. Our one still available stock product is the urine drug screen part 88121 in the attached. I would be happy to quote this as a custom QC if interested. To get a quote we need to know the following: 1. What matrix do you want? Urine? 2. Do you prefer frozen or lyophilized form? 3. What fill size per vial do you want? 4. Ball park, how many total vials would the customer use in a year? 5. We need desired target concentrations. Would it be +/- 25% of these cut offs? 6. Lastly, Is there a budget or target price you are looking to achieve? 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: Ash Patel <Ash.Patel@lighthouselabservices.com> Sent: Tuesday, October 7, 2025 10:02 AM To: Andrew Hartmann <ahartmann@utak.com> Subject: UTAK Testimonial? Hello Andrew, I hope all is well. I have a customer that may need some control materials to cover 10 assays. I’m not sure of what products you may already have to cover these assays, but I am listing the assays and the cutoff. I would need the part numbers for the control sets that would cover the Negative and Positive values based on the cutoffs. Please let me know if you can be of assistance in this matter. Thanks, Ash Amphetamine – 500 ng/ml Ecstasy – 500 ng/ml Cocaine Metabolite – 150 ng/ml Cannabinoid (THC) – 50 ng/ml Hydrocodone – 300 ng/ml Opiate – 2000 ng/ml Oxycodone – 100 ng/ml Fentanyl – 1.0 ng/ml Heroin (6MAM) – 10.0 ng/ml Phencyclidine – 25 ng/ml