Yes
From a sample of urine.
One can test for protein in a sample by using a method called the Biuret test. This test involves adding a reagent to the sample, which causes a color change if protein is present. The intensity of the color change can indicate the amount of protein in the sample.
The larger the sample size, the more accurate the test results.
No.
A blood sample is a sample given for medical purposes as a blood test.
There are single-sample tests and split-sample tests. If you've got a split-sample test, the second half of the sample goes into the freezer for six months regardless. For single-sample and the other part of a split-sample test, they retain the sample if it tests positive, but if it tests negative they normally dump it.
You can get sample test papers with solutions online, however; also check your near bookstore, solved sample test papers are normally available there.
there are different ways to do the test like blood sample or hair sample
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There is no CAT sample test online, but there is some questions you can complete online that might be in the test.www.free-test-online.com