Operating theatres at Noble's Hospital can be used for over 24 hours of private work a week.
The figure is revealed in a written reply to a House of Keys question, from South Douglas MHK Kate Beecroft.
She wanted a breakdown of the hours the theatres are used for private and NHS work.
Health Minister David Anderson says theatre times are normally reported in 'sessions', of three and a half hours.
Private patient sessions per week vary from four to seven, which equates to between 14 and 24 and half hours.
There are usually 40 NHS sessions, making up to 140 hours available.
In addition, theatre teams are available on call 24 hours every day, to attend to patients requiring emergency surgery.
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