Understanding normal parameters of labs & other interesting reads about endurance horses:

How to Read a Blood Panel
source document: https://www.quia.com/files/quia/users/medicinehawk/2407-Vet/labs.pdf

Physiologic Parameters of Endurance Horses Pre / Post Race…
source document: http://www.hindawi.com/journals/isrn/2013/684353/

About Calcium and calcium/phosphorus levels
 Calcium and the performance horse