Why YSK: consuming too much sodium can lead to high blood pressure, increasing the risk of heart disease and stroke. In my country (USA), the average daily sodium intake is over 3,300mg, exceeding the recommended maximum of 2,300mg. The World Health Organization (WHO) recommends an even lower maximum of 2,000mg.
Also: with the rising cost of food, being mindful of additives that increase sell weight is important.
You can assume the pad is close to negligible. If you want more accuracy you can dry out the pad, weigh it, then subtract that from the total of the [meat + wet pad]