What is the test for failing to provide adequate medical care for an inmate?

Where an inmate's claim is based on alleged failure to prevent harm, the inmate may satisfy the "sufficiently serious" requirement by showing the existence of "conditions posing a substantial risk of serious harm" to him. Farmer, 511 U.S. at 834. The Eighth Amendment protects against future harm to inmates because inmates must be furnished with basic human needs, one of which is "reasonable safety." Helling v. McKinney, 509 U.S. 25, 33 (1993). In the case of failing to protect an inmate, a prisoner can show an Eighth Amendment violation by providing evidence that prison officials, with deliberate indifference, exposed him to a serious risk to his safety. Id. at 35.