"Dear Editor. I'm offended. Not always, but often." - Letter in the Daily Universe
Question #92329 posted on 06/09/2019 9 a.m.

Dear 100 Hour Board,

I went to donate blood for the first time today, and when checking my iron levels the guy mentioned that if the levels were too low on the first hand, they could check the other hand and possibly get a different result. Why is that?

-Zwerg Zwei


Dear blacktop,

You ever heard that tired cliché "ruled the world with an iron fist?"

Well, that must be your other one.


--Ardilla Feroz


Dear Zwerg,

It's not because the blood in each of your hands is different. It's because those point-of-care machines are squirrelly and sometimes give erroneous results for a variety of reasons. So if the machine gives an unexpected result, they'll just repeat the test. Picking a different hand for the second stick as opposed to a different finger on the same hand is just voodoo.

- Eirene