While accurate, the procedure is invasive. Some medical professionals recommend using other methods unless absolutely necessary for a precise reading. The Canadian Pediatric Society, for example, notes that while research shows rectal temperatures may remain elevated after a core temperature has started to drop, they still recommend the method for children under two years of age when accuracy is vital.
Apply a small amount of water-soluble lubricant (like petroleum jelly) to the silver tip.
: Coat the tip with a water-soluble lubricant like petroleum jelly for comfort.
