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 Results? Preliminary results from the MEPS blood test are generally available within 72 hours. Sometimes results are ready in as little as 24 hours. If anything is discovered in the test results, then the system flags it for further review by command officials.