Imagine you want to know how much iron, HGC or cholesterol you have in your blood, what does people look at? I try to search on internet and fail to find. I naively imagined it would be with a microscope but also… it feels weird and would ask to like… count manually?
Just wondering how they do…
In: Biology
There are a ton of different ways, some more efficient and specific, some cheaper, and they change depending on what you are looking for.
Overall most of the methods measure the quantity indirectly, seeing how something interacts with the substance being measured, and then quantifying that interaction.
For example, for cholesterol a common method is using a molecole that emits light when binding cholesterol, so they add it to the blood and then measure how much light is being emitted with high precision instruments.
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