This is from a study published on December 22, 1922. https://www.sciencedirect.com/science/article/pii/S002192581885685X
The hydrogen ion concentration of the blood was calculated from the COz-bicarbonate ratio. The average reaction of twelve determinations on normal bloods was pH 7.29, of eight determinations on diseases other than carcinoma it was pH 7.33, and of twenty-three determinations on carcinoma patients it was pH 7.34.
I didn't expect the above results. Are the kidneys dumping bicarbonate back into the blood to try and deal with the acidity produced by tumors?
Citrate ingestion appears to be most effective in elevating blood pH