What is the test for finding a prison official liable under the Eighth Amendment for failing to provide adequate medical care for an inmate?

A prisoner's claim does not rise to the level of an Eighth Amendment violation unless (1) "the prison official deprived the prisoner of the "minimal civilized measure of life's necessities," and (2) "the prison official 'acted with deliberate indifference in doing so.' " Toguchi v. Chung, 391 F.3d 1051, 1057 (9th Cir. 2004) (quoting Hallett v. Morgan, 296 F.3d 732, 744 (9th Cir. 2002) (citation omitted)). In order to find a prison official liable under the Eighth Amendment for denying humane conditions of confinement within a prison, the official must know "that inmates face a substantial risk of serious harm and disregard [ ] that risk by failing to take reasonable measures to abate it." Farmer, 511 U.S. at 847.