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Thread: Blood vs Saliva Tests

  
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    Blood vs Saliva Tests

    Could your blood test reveal a different result that your saliva test?

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    Re: Blood vs Saliva Tests

    Jones, a blood level of cortisol, is like a snapshot reading and may catch the level when it's good rather than at a low point. This is why in my opinion saliva tests for adrenal function are more diagnostic of subclinical hypoadrenal conditions. They can detect a low in cortisol rhythm over a 24 hour period because most kits test at least two times in a day but the ones that test 4 times in a day are preferred. The blood test most often used to rule out true full blown adrenal insufficiency is the Cortisol Stimulation Test, also called the ACTH Stimulation Test because the ACTH hormone is injected during the test to see if a patient's cortisol is stimulated upward/increased. A baseline reading is first taken with a stim test then once the stimulating hormone is injected, other blood draws are done at 30 minute intervals (usually two more). They expect cortisol to rise to at least double the baseline level but if is rises only a little or not all all, they diagnose adrenal insufficiency.
    With subclinical adrenal hypofunction, a stim test won't catch it because the adrenals can be stimulated but they don't have the reserves to hold a proper steady level throught the day hence the need for saliva testing to determine cortisol rhythm.
    Over time I'll share medical research quotes that clearly recognize types of subclinical hypoadrenalism, in conditions such as CFS, Fibromyalgia and Post Traumatic Stress Disorder. With these syndromes being associated strongly to chronic stress (especially PTSD), it stands to reason that this is true of adrenal fatigue whether it occurs with these other syndromes or not.
    I in fact just featured an article on the relation of stress to these type disorder at Thyroid Health,
    here's the link>> http://www.bellaonline.com/articles/art25061.asp
    (Avatar pic is of me & wife, 2008)

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    Re: Blood vs Saliva Tests

    So you are saying that one should go for the saliva test if they really want a more broad reading?

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    Re: Blood vs Saliva Tests

    Blood tests may be reliable if taken 4 times a day same as Saliva test.

    The main aim is to measure the cortisol levels which change during the whole and may go up and down depending on the situation a person is in.

    Even if the blood tests are reliable, it's hard to take blood samples 4 times a day unless you are admitted in the hospital hence Saliva is the preferred method.

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    Re: Blood vs Saliva Tests

    Saliva is far easier. my friend chose this method and continues to do so. She does not like needles anyway, but then again who does?

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    Re: Blood vs Saliva Tests

    What is the average cost of a saliva test kit these days?

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    Re: Blood vs Saliva Tests

    Jones, if you get the type that take only two readings of DHEA/cortisol (morning & midnight), such as the GSMDL, Inc. (BodyBalance StressCheck) ones, they run about $75.00. The ones that take 4 readings over 24 hours cost closer to 140.00.
    Here's ZRT's page listing the kit that takes 4 samples> http://www.salivatest.com/Page.aspx?nid ... ategory=11
    You can order these as a consumer, have your Dr. order them or may be able to find them at pharmacies in your area. Pharmacies send results off for you and call you when results are in. When I've done saliva tests, I just have results sent to me & I take any results of concern to my Doc.
    (Avatar pic is of me & wife, 2008)

 

 

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