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WHy they stoped using validity controls
Nov 03, 2025 08:38 PM
Thank you for this update and the insights. We really appreciate the reply and are glad to hear you are still using our urine.
I am not sure if you maybe ordered more from somewhere else, but I show the last bottle of urine you bought from us was in 2023 and has expired. If you are interested in ordering a fresh lot please let me know.
Thank You,
Andrew Hartmann
Business Development Manager
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25020 Avenue Tibbitts
Valencia, CA 91355
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D +1.661.567.0667
P +1.888.UTAK.LAB
F +1.661.294.9272
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Book a Meeting with Me
https://calendly.com/ahartmann-utak/30min
utak.com
From: Zeiyad AL-Karakooly <azeiyad@arpaincareclinics.com>
Sent: Monday, November 3, 2025 11:31 AM
To: Andrew Hartmann <ahartmann@utak.com>
Subject: Re: Hello from UTAK: I’m Your New Account Manager
Dear Andrew,
Thank you for reaching out and for your interest in our laboratory’s experience with UTAK products.
Last year, our laboratory discontinued the use of certain reagents associated with the our Analyzer (V-Twin Siemens) following our transition to a new screening analyzer. However, we continue to use one of your products — the UTAK negative urine — as part of our LC-MS sample preparation process.
In my experience, this product has demonstrated excellent stability and consistent quality. We are very satisfied with its performance.
Thank you
Zeiyad,