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.
This table is a guide. The effect on serum and urine osmolality can vary depending on the individual clinical situation - eg, hypernatraemia may cause a decreased urine osmolality and hyponatraemia may cause an inappropriately increased urine osmolality.