And for my money, the best show in TV's greatest decade was Lost in Space. It's impossible to describe what watching this show was like in the 1960s. It's an experience that simply can't be re-produced today.
The reaction reaches its peak about 48 to 72 hours after the PPD is injected. Waiting too long or not long enough may cause an underestimation of the reaction and, therefore, affect how the test is read.A positive test will cause redness, itching and a raised, hardened area of skin called an induration.
How long does it take to get blood test results? How long does it take to get the results back from a blood test? I just went in to a clinic for a screening for multiple stds, and now I'm just wondering how long I should expect to wait. They gave me a number to call, but will this take days or weeks? Answer.