I wish these weren't so expensive! I hate having to fork over an arm and a leg to find out if I should waste money or not to go to the doctor! However I love this product because it works. My first time having a UTI, I had suspected one but didn't want to see a doctor unless I had to. I bought these strips and they let me know by measuring leukocytes in my urine. The tabs changed colors and indicates I should see a doctor. I would love to have these in bulk so that if I feel off down there again, I will know if and when to see a doctor and drink more water lol.