Hmmm....: There are thousands of different blood tests, and about 50 are very commonly done. Blood test results can come back in 3 minutes to 3 weeks. It all depends on which test and on how urgently the result is needed. A patient needs to follow up with her doctor after a test is done, and not just expect somebody to contact her if a result is abnormal. Many results are available online to patients now.
Answered 2/24/2018
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