What is the test for a claim for deliberate indifference to a serious medical need?

A claim for deliberate indifference to a serious medical need, as plaintiff alleges here, involves a two-part inquiry. See Jett v. Penner, 439 F.3d 1091, 1096 (9th Cir. 2006). First, the plaintiff must show a serious medical need, meaning that failure to treat [the] prisoner's condition could result in further significant injury or the unnecessary and wanton infliction of pain.' Id. (citation and internal quotations omitted). Second, the plaintiff must show that the defendant's response to the need was deliberately indifferent. Id.