The doctor found his blood pH was too high and diagnosed alkalosis.

alkalosis 是由 alkali（碱）加上后缀 -osis（表示异常状态或疾病）构成的名词，字面意思是"碱过多状态"，医学上指"碱中毒"，即血液中碱性物质过多导致pH值升高的病理状态。