Saliva cortisol test - practical questions - Thyroid UK

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Saliva cortisol test - practical questions

7 Replies

I just received a diurnal cortisol test. Seven saliva samples are to be collected throughout the day, the first one upon waking and the last one at bedtime.

According to the instructions, no meat for 12 hours before the first sample, no dairy, eggs, or caffeine, no cruciferous vegetables and only vegetarian food for the whole day.

Could all those foods possible affect the test results in some way...? It feels there isn't much left to eat or drink at all...!

7 Replies
SeasideSusie profile image
SeasideSusieRemembering

Crikey! Whose test is that? Do they give a reason to avoid them?

I do the Regenerus test and they say no food or drink on the day that contain caffeine. They say to avoid eating one hour prior to each saliva collection but there is no restriction on which foods you can eat. The only restriction is if testing melatonin and then it says to avoid nuts, fruit, fruit juice, wine, rice and coffee.

silvisilvi profile image
silvisilvi in reply toSeasideSusie

Interesting,when I did my saliva test in Synlab -German lab in Croatia,they never advised about not eating certain foods prior to testing, just about teeth brushing and smoking,which I dont,does this mean that my cortizol results are not valid.

SeasideSusie profile image
SeasideSusieRemembering in reply tosilvisilvi

I have no idea, my reply to thecat68 details what Regenerus say which is vastly different from what her lab says.

in reply toSeasideSusie

I discovered that there were only three containers in the box ( when I am supposed to send them seven samples) and they replied they had sent me the sex hormone test kit by mistake...so the instructions could apply to that one rather than cortisol...?

SeasideSusie profile image
SeasideSusieRemembering in reply to

It could well do. Presumably they are sending you the correct kit, it will be interesting to see what those instructions say.

in reply toSeasideSusie

Yes, it’s on its way!

It's by a German lab called Verisana (available on Amazon). No explanation given.

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