I use Glucerna 1.5 cal for diabetics...8oz, 356 calories, 19.6 grams protein, 31.5 carbs. I revived 8 cases from my treatment center, but I think was done through my insurance...Medicare, but thats ok. Some OTC Glucerna, boost and such are becoming to have less calories... less than 100, and deigned or advertised to reduce weight. Even the bottleis are shaped like a figure with a small waist. I have a jack LaLanne juicer, a vitamix, but it's easier for me to pop the lid too. Good luck with the biopsy.