For #6: Evaluation of problem solving skills.
I decided not to do a written exam, because if the tech answered incorrectly I would have to show re-training, re-competency, etc. I handled this element by putting a "scenario-based question" for each test/task on my competency. While I am directly observing them and tubes are incubating, etc, I have the discussion with them (for example for the antibody screen "What would you do if you had a patient last week with a 4+ reaction on an antibody screen, result was an Anti-K, and now they are back in the ER this week with a negative antibody screen? What steps would you take to troubleshoot this?"). What's nice about this is you get to have a good conversation with the tech and go over all of the possibilities and they ask other good questions. If they answer "I have no idea", you can ask "so what do you do when you have no idea"; hopefully they answer "refer to the policy, ask my lead tech, call the supervisor, etc" and can still show good judgment. I will change the scenarios every year.
See attached for a good article about tips for competency in the Blood Bank. Competency assessment in the transfusion service, MLO article Oct 2013.doc