Potentially silly question about peak flow and spirometry

[twinkly29]

Sorry if this is really silly!

Do people get better PF readings when it's done as part of a spirometry test or do other people's PF readings on PF meters match those on spirometry machines?

[Hidden]

Even if you have a spirometry, your PF is still taken with a PF meter. artp.org.uk/en/patient/lung...

[twinkly29 in reply to Hidden]

Yes I know but it's part of the machine as opposed to doing it with the home peak flow meters.

[Hidden in reply to twinkly29]

When I've gone for a spirometry test, before they do it, they use a meter just like the ones you use at home. the sprometry machine performs different tests. Pulmonary function testNormal value (95 percent confidence interval)

FEV180% to 120%

FVC80% to 120%

Absolute FEV1 /FVC ratioWithin 5% of the predicted ratio

TLC80% to 120%.

Completely different to the PF test.

[twinkly29 in reply to Hidden]

Ah ok.

I just did machine spirometry but there was a PEF value on that.

[Lysistrata Administrator Community Ambassador]

The machine does measure PF too but when I did it recently and mentioned I had a home digital meter doing both, the physiologist doing the tests said there is a different blowing technique needed for PF vs other measures - so suspect that it might be preferred to do it separately. I think they were mainly after the FEV1 and other measures this time really - have also had them measure PF separately on a handheld meter.

[twinkly29 in reply to Lysistrata]

Thank you x