Interpreting the Acid-Base Balance Using Tic Tac Toe (0s and Xs) To interpret the acid-base blood gas results, you first need to know what normal levels are. You also need to know what a high figure means vs a low figure – is this acidemia, or alkalemia? And you need Tic-Tac-Toe. Here’s why… Article999 June 22, 2022 1 Comment