>I can't see B1 or lactate on any of the blood test results There is a more widespread test similar to lactate called bicarbonate blood test. It allows you to

>I can't see B1 or lactate on any of the blood test results There is a more widespread test similar to lactate called bicarbonate blood test. It allows you to determine the overall blood acidity level, so you will be able to capture the acidosis/alkalosis of any nature, not only caused by lactate. It is best to perform the test at the very same moment when the shortness of breath is being experienced.