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Frequently Asked Questions

What is an assay?

Broadly speaking, assay is a scientific term that means test. It is often used by the pharmaceutical industry to describe the experimental procedure that quantitatively or qualitatively measures the presence, amount, or functional activity of a target entity (to get all Wikipedia about it!)

Can you perform an Ames test at your laboratory?

We don’t provide the Ames test, as it uses animal components. We do provide the BlueScreen assay, a genotoxicity test that covers all types of genotoxicity: anugens, clastogens, and mutagens.

Is XCellR8 GLP accredited?

Yes we are. Our Good Laboratory Practice (GLP) accreditation by the UK’s MHRA (Medicines and Healthcare Products Regulatory Agency) means that we can provide you with in vitro safety test data that can be used for compliance with a wide range of European and global regulations.

When will I receive my final report?

Most of our tests take 6-8 weeks from receipt of your sample to the first draft report, although please note sometimes it can be slightly shorter or longer depending on the test. We ask for your comments on the draft report within a week, and your final report will be with you after we’ve then completed our final QA checks.

We don’t use a Purchase Order system or else Purchase Orders take a long time to issue in my organisation. Can I still start my study?<br />

Yes. In these circumstances, we will usually issue the invoice at the beginning of the study and ask for payment within 30 days.

What do you need from me to start a test?

Firstly, we ask you to approve our quote and send us a PO number. We’ll then ask you to fill in an information sheet about your product or ingredient which includes some information such as the lot number, expiry date, purity and storage conditions required. We’ll ask for a description of the item (its name, colour and physical state) which will need to match the sample you supply. For some tests, we’ll also ask you to supply the molecular weight. If you have a Material Safety Data Sheet (MSDS), please also send us that. And last but definitely not least, we’ll need a sample of the item(s) you want to test sent to our laboratory in Cheshire, UK. 10ml if it’s a liquid or 10g if it’s a solid.


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