When a character goes one over his wound threshHold does he stay there (after taking the critical hit) at one over? Or does he have to keep counting up beyond his wound threshold based on how much damage he took above that?

So let's say Thessc has suffered 18 wound points out of his threshold of 14. Does the stimpack or healing chech start calculating at 15 (one over his threshold) or does it have to count up the remainder above his threshold before he's back up (in other words, the healing efforts start at 18 in this example).

Thanks for the info.

Core, P216:

When wounds exceed a charac­ter's wound threshold, the charac­ter should track how many wounds he's exceeded the threshold by, to a maximum of twice the wound threshold. He must heal wounds until his wounds are below his wound threshold before he is no longer incapacitated.

You count up to twice your threshold.