Sheldon asks for a throat culture to test for influenza, but influenza is a virus and cannot be grown in a standard bacterial culture.
Sheldon reveals the cup's true purpose by showing Leonard a label he placed on the very bottom of the measuring jug. "The Big Bang Theory" The Pancake Batter Anomal...
Should I track down more details or look for other episodes where Sheldon gets sick? The Pancake Batter Anomaly | The Big Bang Theory Wiki Sheldon asks for a throat culture to test
The emergency code is named after the specific color of Sheldon's mucus when he is truly sick. The Pancake Batter Anomaly | The Big Bang
February 10, 2022 (Pinterest mention) / Original air date January 2008.
After Penny returns from Nebraska where her family was sick, a germaphobic Sheldon becomes hyper-vigilant and eventually falls ill himself.
This episode marks the first appearance of the iconic "Soft Kitty" song, which Sheldon forces Penny to sing to him.