Spoken as English letters H-P. Used interchangeably with 血量 (xuèliàng, 'amount of blood/HP') and 血条 (xuètiáo, 'HP bar'). Casual gamers mix all three: 我HP不多 = 我血不多 = 血条空了.
usage
Companion stats also kept in Latin letters: MP (mana / magic points), CD (cooldown), DPS (damage per second), CC (crowd control). All read as English letter-by-letter in spoken Chinese.