Hello,
First of all, uric acid is a waste product of the body that is normally eliminated by the kidneys. When the body is not able to eliminate it, uric acid can cause crystals and create certain diseases such as gout or kidney stones. Uric acid is not related to blood acidity at all. It is important to understand that the acid/basic balance of the blood (or blood pH) is very stable and remains at an average of 7.40. Our body works very hard with the help of our lungs, our kidneys and ingredients called "buffer" to maintain this balance. So our blood cannot be acidic. If it is, it is a medical emergency. Indeed, the body cannot survive in this situation.
The acidity of the blood is in no way related to the acidity of the stomach which is normal to help digestion. Pantoloc, for example, will decrease the acidity of the stomach, but will never affect the pH of the blood. No natural health product has a beneficial effect on the pH and the food we ingest cannot influence it. Indeed, no matter what food we eat, it all passes through the stomach which is naturally very acidic. The food is cut into small pieces to be digested. At this stage, these pieces have no acid or base power.
Regarding blood tests, yes a blood test can determine the pH of your blood or the amount of "buffering" elements in your blood. However, unless you have certain health problems (e.g. kidney or lung problems), these results will be normal. If not, a follow-up with your doctor should be done.
Finally, if you want to help yourself, don't turn to natural or dietary products against "acidity", but to good lifestyle habits. Protect your lungs by walking or exercising (depending on your abilities) and protect your kidneys by drinking plenty of water (if you have no fluid restrictions)