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Comment Re:The blue tits of death. (Score 5, Informative) 299

Polar actually sells a sports bra version of their heart rate monitor strap. It's a brilliant idea, because wearing the strap under a sports bra isn't really all that pleasant. Lots of us do it, but it sort of sucks. You still have to attach the actual monitor with the transmitter and battery to the bra, but the electrodes and wiring are built in.

Comment Re:Something has to give, buddy (Score 1) 466

Turbines are stopped and the blades fully cleaned at least once a year anyway - bug residue and airborne particulates (mostly carbon based - hmm) adds a surprising amount of drag and reduces efficiency. It's a popular gig with rock climbers since the skills aren't that common, the work is seasonal, and the money is great.

Comment Re:hemoglobin test (Score 1) 282

I loved donating, and am also O+ but I tend toward vasovagal syncope (ie, I faint when my blood pressure changes rapidly) and after passing out in the recovery room a few times they moved me to half units and then a couple of times after that they started subtly encouraging me not to donate. I guess I was too much paperwork. :-(

Comment Re:This fainter is very happy (Score 1) 282

former lab sample processor here - not CLT, but pre-test prep. For most tests you need serum, which is only about half the blood volume after centrifugation. Then it's poured off- by hand- into plastic sample vials. You lose some down the side of the tube, the tubes are wider than they need to be because human pour accuracy is bad which is more surplus, and the company always wants to keep at least one test's worth of serum as a backup in case a tube gets dropped or exposed to a contaminant or gets overheated or something, and because more often than you'd think doctors call up and say oh hey add these 40 tests to Bob's sample. Oh, and sample processors are expected to split well over 120 patient's orders an hour, usually into four or five tubes, sometimes a lot more.

A funny aside: some people have triglyceride levels so high that their blood serum is actually strawberry milkshake pink. Always impressive to see that.

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