That’s not a bag of urine, beer or ice tea. It’s a litre of fluid drained from Lou’s right lung. The reason she hasn’t been eating and has had 24/7 nausea.
The tube was still attached in the pic, and the bag drained another .5 of a litre making it a rounded 1.5-litre, collected through thoracentesis. A procedure in which a needle is inserted into the pleural space between the lungs and the chest wall to remove excess fluid from the area.