I don't actually know anymore.. usually it's 7-10 days tho with 5 of those in seclusion and repeat injecting of tranqs/loraz.. No other contact other than to be pinned down for that. They leave the lights on so you don't really know if it's night or day and take your clothes away in return for an indestructible Tshirt.
I'm very volatile on admission, usually via secure ambulance or Police.
things have gotten better though, back in 2010 It used to be Police station 1st, pinned to the floor in cuffs for 12hrs plus before MHT came, then transfer to Hospital and get a bloody good beating regularly from the nurses.
Police and staff now are much less aggressive but the damage is done here so I'm like a feral cat regardless.. I average maybe 2-3 x a year on Section
Police holds (136 in UK) are more frequent.. Sometimes I'm put on a S2 and other times a Taxi home after a few days waiting for the Drs and AMHP to turn up and assess me.
On Three occasions I've not been assessed at all just drugged and taken straight to seclusion...