Colour sensing Arduino

Hi,

I am new to electronics and coding but using an Arduino for my major project in my final year of product design at university. I was wondering if anybody could offer some suggestions.

I need to make a system that can read colour intensities. It is a blood protein test reader using testing strips that's colour gets more intense the more protein present. Therefore, I have started to explore Arduino colour detection. Firstly, what is the method to get the msot sensitive readings. And how can I make a system where the strip can be inserted into a device for the reading?

Thanks in advance!!

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