A Speed of 35-40 mph May be Biologically Possible. Amazing as Usain Bolt's new world record 100-meter victory was, his time of 9.58 seconds is nowhere near what biostatisticians such as Peter Weyand of SMU thinks is the natural limit for the human body.
This slowed the process of criminal background clearances to a period of WEEKS and MONTHS. The Live Scan process gets results to the employer or licensing agency within days. In most cases, the results from DOJ come back within 72 hours. Please note, due to various reasons, results can be delayed. For any significant delay, DOJ will contact the requesting agency. The results are either emailed or sent to the requesting agency listed on the Request for Live Scan Service form.
Blood tests are the least used for pre-employment drug screens because drugs are non-detectable in the blood stream after 48 hours. Labs generally report blood test results as quickly as they report urine test results.For most labs, that means results are available 24 hours after the specimen is tested, or 48 hours or more when the specimen must be delivered to a lab.hen drug screens return a negative result, the applicant is not tested again. The results of a negative test are usually available to employers within three business days after testing is completed. A positive test generally requires additional testing, and will thus take more time.