Before revision: This technique is often utilized for the Guthrie test, where it is used to soaking the blood into pre-printed collection cards known as Guthrie cards.Guthrie Cards, Catalyst (ABC1), 29 May 2003.
After revision: This technique is often utilized for the Guthrie test, where it is used to soak the blood into pre-printed collection cards known as Guthrie cards.Guthrie Cards, Catalyst (ABC1), 29 May 2003.