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Mature BDNF Isoform Detection by ELISA


Why Choosing the Right Validation Method is Important

Dear Researcher,

Detection and quantification of protein isoforms by ELISA is challenging and requires careful validation and choice of assay antibodies. Mature BDNF is such an example, as BDNF ELISA assays often cross-react with the full-length proBDNF isoform, or actual isoform preference that has not been tested. Additionally, choosing an incorrect immunological technique to validate isoform detection may lead to false conclusions.

Polacchini et al., 2015 and Satori et al., 2019, reported that the Biosensis Mature BDNF RapidTM ELISA quantifies 'total BDNF', based on line blot experiments using the assay's detection antibody. We have therefore re-assessed our kit performance, and compared it to a competitor BDNF ELISA (Company A), claimed to be mature BDNF-specific in the very same publications.

The Figure above is an example from our Technical Note #5 showing ~4-Fold higher molar cross-reactivity of proBDNF proteins from 5 different sources in Company A's Mature BDNF ELISA (Red), as compared to the Biosensis Mature BDNF RapidTM ELISA assay (Black).

Our Technical Note #5 summarises our findings and confirms our initial claims of preferential quantification of mature BDNF with our Mature BDNF RapidTM ELISA.

We are the original manufacturer of our popular RapidTM ELISA and perform extensive validation, and thus we have absolute control and confidence about their quality and performance. Take advantage of our Mad March Promotion and see for yourself.

Our special Mad March Promotion: Purchase 1 2-plate RapidTM ELISA kit and you can choose any 1-plate kit from our entire RapidTM ELISA range (includes our Oligomeric  Aβ ELISA and our newest member, Alpha Synuclein RapidTM ELISA). That's a gift worth $398.50! Please send your order to and quote FREEKIT*.

*One order per customer, direct customers only. Valid until 30th April 2020.