What does it mean to increase urine occult blood dry chemistry test paper by 2?

Dry chemical inspection means that the chemical reaction method used in the inspection requires little water. For example, urine tests now use test paper and instruments, whereas reagents and urine used to react in test tubes. The present method is called "dry chemical method", and the previous method is called "wet method". Therefore, when the hospital miscarries, it is necessary to clarify the purpose of the examination.