Frequently Asked Questions
A matrix or baseline sample allows you to screen a blank matrix for analytes of interest, endogenous compounds, and interference with your test method.
When you order blank whole blood, we prefer to send you a sample of the matrix so you can approve the lot before we send your entire order. This helps avoid costly delays and expensive shipping fees.
We provide Certificates of Analysis upon request. Email firstname.lastname@example.org or send us a message via Live Chat with the product and lot number you’d like a CoA for.
We charge the shipping carrier’s actual rate. If you have your own UPS or FedEx account, we can charge shipping to that account instead. If your order includes frozen products, you will be billed a $25.00 USD fee for dry ice.
Yes. According to a number of tests and studies we’ve conducted, our freeze dried products maintain stability when kept at temperatures between 2°C – 40°C (35 – 104°F) for up to 2 weeks. Our products typically last longer on the lower end of that range.
The warranted reconstituted stability for UTAK lyophilized controls will never exceed 25 – 30 days due to the unpredictability of spiked-in analytes in a 100% human biological matrix.
However, if a lyophilized control is thawed / reconstituted and subsequently frozen within 30 minutes, the newly frozen aliquots shall take on the performance attributes of a UTAK frozen control.
UTAK frozen controls retain an 18 month shelf life from their initial freeze date. Therefore, once frozen the aliquots will have an expiration date of 18 months or the shelf life for the newly frozen aliquots cannot exceed the shelf life date printed on the original product insert.
Yes. According to a number of tests and studies we’ve conducted, our Validity controls maintain stability when kept at temperatures between 2°C – 40°C (35 – 104°F) for up to 2 weeks. Our products typically last longer on the lower end of that range.
We ship frozen items Monday-Wednesday to avoid potential delays over the weekend. We can ship frozen items on Thursdays or Fridays by customer request, but we cannot guarantee the product if it performs out of spec because of the delay.
We do not recommend multiple thaw cycles for human blank matrices. We recommend that you divide blank matrix into smaller aliquots prior to re-freezing to avoid multiple thaw cycles. If necessary, you can thaw and refreeze a blank matrix every few weeks or months without experiencing a degradation of the product.
If you thaw a matrix to aliquot into smaller amounts, refreeze the matrix within 72 hours to ensure stability.
If you have more specific questions about thawing and refreezing a product, please contact us.
UTAK’s Blank Matrices can withstand a small amount of thaw cycles over a longer period of time. It is recommended to refreeze the matrix within 72 hours of completion of thawing.
For all other controls, we refer to the storage and stability information on the IFU.
No. Third-party verification is a single data point showing that the requested analytes are performing as expected.
All of our stock controls undergo third-party verification as part of the manufacturing process. When ordering a custom QC product, you can choose to have your product verified. This will add to the production time and product cost.
Regardless of whether your product has undergone third-party verification, you should validate each lot according to your lab’s procedure.
We’ll gladly work with you to find out why your product isn’t performing as expected. Please reach out to us for technical support by phone (888.882.5522) or email.
Online ordering is not yet available. To place an order, please call (888) 882-5522, email email@example.com, or fax (661) 294-9272 to reach the Control Freaks.
As many as you need. We’ve manufactured controls with over 100 analytes. Please contact us via our personalized QC request form with the analytes you need and we’ll reach out to you with a quote.
Not at this time.