What is the legal test for deliberate indifference by a prison officer to a convicted prisoner?

comprehensive under Fourteenth Amendment Due Process as for the convicted prisoner under the Eighth Amendment. See Bell, 441 U.S. at 535 n.16. In the Eighth Amendment context, the "deliberate indifference" standard involves an objective and a subjective prong. First, the alleged deprivation must be, in objective terms, "sufficiently serious." Farmer v. Brennan, 511 U.S. 825, 834 (1994). Second, the prison official must act with a "sufficiently culpable state of mind," which entails more than mere negligence, but less than conduct undertaken for the very purpose of causing harm. Id. at 837.