Zinc oxide is the metal zinc that has been oxidized. The chemical formula is ZnO, 1 zinc atom and 1 oxygen atom held together by an ionic bond. Zinc oxide does occur in nature as the mineral zincite, but it is quite rare and commercially unavailable.
I have done a few stool samples in my time and have always just stored them in the fridge, until the next day to take them into the docs. Good luck hun I hope they get it sorted.
(Like cow's milk, spoiled breast milk smells bad and tastes sour.). That depends on how and where you store it. Under most conditions, breast milk stays fresh at room temperature (60 to 85 degrees Fahrenheit) for three to four hours. But expressed milk that has little bacteria can last for six to eight hours if room temperature remains on the cooler side. You can refrigerate breast milk for three to five days and freeze it to keep it fresh even longer. Thawed breast milk will keep in the refrigerator for up to 24 hours (but don't refreeze it). If you're traveling, you can store breast milk in an insulated cooler with ice packs for up to 24 hours.