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Frequently Asked Questions

Does XCellR8 offer human patch testing?

No, we don’t but many clients use our in vitro tests as an early screen in product development before they get to more expensive human trials. They can also be used to generate supporting information in a weight-of-evidence approach to safety assessment. XCellR8’s tests may give you a binary classification on the effect of an ingredient, for example, Irritant or Non Irritant, or a more detailed classification to help you rank irritation potential. Please get in touch if you’d like to find out more.

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?

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

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.

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.

Where do you get your human cell cultures from?

We have long standing relationships with global biotechnology companies who we buy our tissue models from. They source them from consenting donors, usually as a by-product of cosmetic surgery.

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!)