Hello. What kind of method fits to work on blood

Amount of protein? Same as humans, I think ... Electrophoresis of serum proteins

Edited January 5, 20178 yr by Function

Amount as in different types of proteins? Electrophoresis does not have the resolving power to do that (and even 2D would be too limited). Or are you talking about total abundance? In the latter case any protein quantification method (Lowry, BCA, Coomassie etc.) would work. Most of it is going to be albumin, anyway with a decent chung also being hemoglobin, IgGs and so on.

Im trying to prepare soil fertilizer from horse's blood. So it needs total abundance and different types of proteins.

Why is the composition relevant when used as fertilizer?

Total nitrogen is probably easier and at least as relevant

https://en.wikipedia.org/wiki/Kjeldahl_method

or

https://en.wikipedia.org/wiki/Dumas_method

are commercially available.