good question. Benzathine is long acting so skin test has to be done with benzyl.
No.
The PPD skin test for tuberculosis is calculated in MM not percent. Induration of 2 or less than 2 mm, without blistering, is considered a negative skin test.
Urine with negative or no sugar is a good, normal finding.
Depends on the circumstances. A negative drug or cancer test for instance means that the test isn't showing any signs of cancer or drugs - which is a good thing. OTOH, a negative pregnancy test for a couple who've been trying for a child will probably bee seen as bad.
Do it after seven days , as you might have ben to early the first time and it showed negative.
Negative blood in stool test means no blood was found in that particular smear from that particular stool sample. Good news.
You mean those skin tests? If you do, then a negative reaction is when there are no signs of any inflammation or redness around the injection site.
Yes, because poppy seeds share some chemicals of marijuana and thus, will make you test positive for marijuana. However poppy seeds can evacuate your system in about 3days rather than 2 months.
usually about 2 minutes
Yes, it is common to develop a small bump or induration at the injection site after receiving a tuberculosis (TB) skin test, known as the Mantoux test. This reaction occurs as the body's immune system responds to the tuberculin protein injected under the skin. The size of the bump is measured 48 to 72 hours later to determine if the test result is positive or negative. However, not everyone will have a noticeable bump, and the absence of one does not necessarily mean the test is negative.
If it is a store bought one, No. They are only good for one test.