Blood test query

[DaddyCool2001]

Hi

I have a blood test appointment on Tuesday at the GP’s for ‘Ferritin, Cortisol, B12 & serum Folate, Diagnostic HbA1c.’ Will any of my supplements affect the test results?

Vit D - 4000lu

Selenium - 200mcg

Fish Oil - 1000mg

Vit K2 MK7 - 100mcg

Any advice greatly appreciated.

[Hidden]

I don't think so. As you are having cortisol done are you aware that it should be taken between 8-9am as that is the time that cortisol is naturally at it's highest point in the body before it drops. This gives a more accurate result.

[DaddyCool2001 in reply to Hidden]

My appointment happens to be 8.10am so I think I lucked out. Cheers.

[DaddyCool2001]

Thanks Scrumbler, I’m afraid it’s too late to come off them for a week as the test is on Tuesday morning. But I’ll definitely be more prepared next time.

[Hidden in reply to DaddyCool2001]

It depends on why you're having the cortisol bloods being taken, if you are wondering whether you may have adrenal insufficiency (low cortisol) or Cushing's (high cortisol) then the early morning blood test is a good place to start.

[DaddyCool2001 in reply to Hidden]

Not really sure why. My GP consulted with an Endo when I was asking for an increase to my Levo and he recommended the tests.