Yes, as a Doctor Only, you can give results on the CMP and electrolyte panel the same day. This will help the doctor to decide whether the patient should be admitted or not, in most cases. Although, there are cultures in these panels that can take longer time for the results. Most of the time, if discharged, etc. they will call with critical results and when results are normal, you may not hear from them at all.
Because they are perceived as of no use do to the age they have which isn’t right but I can understand the reason
Decreasing iron-rich foods
to test the split you can hold the female patient up and ask her to apply a little weight to the injured leg if it doesn't work then the split was a success.