I find that a lot of times on the medicine and cardiology services, volume status is a large part of patient care.  Whenever we are removing volumes with diuretics, "lyte check" often follows - and often signed out to the overnight team to check.  

More often than not, really what is check is the K > 4 and Mg > 2, but often the lytes are ordered as a full BMP panel in the evening.

What would be very helpful and promote limiting the unnecessary full chem panels sent is to have some sort of "pm lyte" order which only orders potassium and magnesium.  What would also be helpful and streamline patient care for the overnight housestaff is to have the time autoset for 9pm or some standardized time so that there's not random times for each patient on each team that the cross over housestaff needs to comb through (and sometimes can miss the lyte check).

This can be implemented at UC or SFGH to help decrease unnecessary lab tests.