We ask for an expiry or retest date to ensure that your test item is within its established shelf life specifications when stored under defined conditions – it’s all part of our work being performed in line with GLP (Good Laboratory Practice). It’s important that this is a true expiry date or retest date as it helps us make sure your test item is behaving as it should, and the results you get from us are correct.
Yes. In these circumstances, we will usually issue the invoice at the beginning of the study and ask for payment within 30 days.
Noting the purity of the item being tested is part of our GLP (Good Laboratory Practice) compliance. For certain tests, it allows us to ensure the correct concentration is being tested. It’s also another piece of key information that we check to make sure we have the right test item, and you get the right result.
XCellR8’s tests can take as little as 4 weeks, up to a maximum of 12 weeks. We’ll always try our best to accommodate urgent requests. Please do bear in mind that the timeframe starts at the point we receive your sample and the accompanying information that we ask for in order to start a study, and finishes when we send your draft report.
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!)
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.