3. Don’t get too thirsty before a urine test.
Human urine is 99% water and only 1% acid, ammonia, hormones, dead blood cells, protein, and other substances that are used for research. As you can see, the concentration is very low. So if you provide 100 ml of urine, approximately 1 ml of it is suitable for analysis. Drink more water a few hours before the test to make sure you produce enough urine.
4. Don’t use deodorant before a mammogram.
The ban on the use of deodorant before a mammogram is related to its composition since it contains small metallic substances. During the procedure, it’s easy to mistake these metals for calcifications, which is a sign of cancer developing. The results will not only be wrong, but they’ll make you pretty nervous.