[Scoundreller]

> One of the nurses said someone tested high last week. They made the person sit in a chair for half an hour and then re tested them and granted them entry.

While 30 minutes seems excessive, this makes sense. Your surface temperature is heavily biased by your environment’s temperature. Letting one settle in a controlled environment to test is reasonable to see if it’s really a fever (temperature will stay elevated) or due to environmental factors.

An issue is that anyone could ice their forehead in advance and beat the test. Dunno if too low of a temperature triggers a fail. In theory, everyone should have to sit in a controlled environment before forehead testing, but at that point, may as well do tympanic checks.

(Among many other issues, like the massive variance that’s probably accepted because of unreliability of surface temperatures as a proxy for internal temps)

[robbiep]

It’s winter here now. It’s not true that a ‘true fever’ will keep temperature high. On night shifts when I am called to patients that are febrile (using more sensitive tympanic or sublingual thermometers) I often ask them to check again in half an hour to kick it down the road (at which time they are generally non-febrile) provided they have a known cause and are on adequate treatment. Although the Pathogenesis of hyperthermia in this instance is usually from a slightly different cause (ie bacterial rather than viral)

[nomofomo2]

I biked to a non-doctor appointment in 80+ degree heat recently. A guy thermometer-gunned my forehead before coming in. I was outside and visibly sweaty, but I still had to warn him that given the circumstances, my temperature might appear a bit high. I don't know if people are really thinking through any of this.

[misanthropian00]

Did it read high? I have been checked by IR thermometers hundreds of times and have never tested above 36.9C which seems to be the gate temp around here. I too have sometimes been hot and sweaty and it didn't seem to affect the results much. I cannot even enter my own apartment building without passing an IR thermo check.

[Scoundreller]

I wonder how much of a difference biking made. Generating your own breeze may balance things out.

Right now where I am, air conditioning isn’t common, but it was slightly above body temperature at the peaks of each day (I guess 100F). I wonder how that worked out with scans.