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Hi Jillian, Thanks for reaching out for this. We have moved up this shipment. This will likely ship today for delivery on Tuesday. It should arrive by Wednesday at the latest. I am also adding in @Kevin Kopp and @Nicole Miller from our technical team to look into the values you are receiving. To help us document and investigate, can you share the values you are receiving as well as complete the below table to the best of your ability? Field Required Customer Entry Customer Identification Number (CID) Contact Name Contact Email Sales Order # (or) Lot# (or) Part# *Two of the three are required What happened? (e.g., Part number 1234 was shipped) What should have happened? (e.g., part number XYZ should have been shipped) Additional Comments (e.g., steps already taken to troubleshoot, additional notes, or preferred resolutions) 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: Blaney, Jillian C. <Blaney.Jillian@mayo.edu> Sent: Thursday, September 18, 2025 5:42 PM To: Andrew Hartmann <ahartmann@utak.com> Subject: Re: Immunosuppressant QC Question - Mayo Clinic Good afternoon Andrew, I hope you are doing well! I was wondering if you may be able to have our next shipment of QC 2 shipped as soon as possible instead of waiting until 10/1/25. We recently began using bottles from the box we received on 7/11/25, and our results for 4 different bottles are showing lower Tacrolimus and Everolimus concentrations than expected. We moved to using bottles from the shipment we received 8/22/25, and those are giving us our expected concentrations, but it is only one box so it will probably run out before the next scheduled shipment on 10/1. Please let me know if this would be possible, and if you have any thoughts on what may have caused these variations. Thank you and have a great day!