The agency typically arranges a meeting between one of its escorts and the client at the customer's house or hotel room (outcall), or at the escort's residence (incall).
The urinary sodium concentration helps in diagnosing patients with low plasma osmolality. High urinary sodium concentration in the presence of low plasma osmolality can be caused by renal disorders, endocrine deficiencies, reset osmostat syndrome, SIADH, and medications.
Osmolality results are not diagnostic; they suggest that a person has an imbalance, but they do not pinpoint the cause. In general, if someone has an increased serum osmolality, it is due to either decreased water in the blood or increased solutes.