Avoid ordering tests unless the indication is clear and the results will impact further follow-up and treatment

Rationale:

For every blood test performed on a healthy person, there is a 5% chance that the result will fall outside the reference range and may be interpreted as pathological. The more tests performed, the higher the risk of false-positive results, which can lead to unnecessary concern, further investigations, and, in the worst case, overtreatment.

Referanse:

• Explaining laboratory test results to patients: what the clinician needs to know BMJ 2015; 351 :h5552