Andrew Johnson mAMH. mBANT. NTCC. CNHC. Herbalist & Nutritional Therapist

Lab Tests

For more information on the nutritional and functional lab tests I recommend look at the following lab websites:

Genova Diagnostics Europe:

BioLab Medical Unit:

Some of the lab tests I recommend the most are:

Nutritional tests

Hair Mineral Analysis: This is helpful for assessing levels of toxic metals (such as mercury, lead, cadmium), and may also help assess the levels of essential minerals in the body such as calcium, magnesium, zinc, chromium (although I would not rely completely on hair for essential mineral levels, it can be a useful guide). if the hair indicates high levels of toxic elements it is worth checking further with a blood and or urine test.

Urine Iodine test:  A urine sample test is the best way to get a good idea of iodine levels, which I find is a common deficiency today.

Vitamin D3: This is another common deficiency today, due mainly in the UK to a lack of sun, but also low levels in the diet.

I also recommend various other nutritional tests at times for minerals, trace elements, vitamins, essential fatty acids, antioxidants, and amino acids (proteins).

Immunological tests

Food Allergen Cellular test, or FACTest: This is a comprehensive blood test that covers over 240 foods to detect a range of reactions associated with intolerance or allergy.

FACTest Dairy & Grains Profile (including yeast and egg): as above but just tests for the most common allergens or intolerances found in the UK, grains (wheat, rye, oats etc), dairy products, yeast and egg.

Candida Antibody Profile: This can be either a blood or saliva test to assess how much candida albicans is affecting someone. Many nutritional therapists find candida overgrowth is a common problem.

Gastrointestinal tests

Comprehensive Digestive Stool Analysis & Parasitology (CDSA/P): An in depth test of the digestive tract and bowel, including bacteria, candida/yeasts, friendly gut flora, parasites, digestive and absorption function, inflammation, immunity (SIgA), and blood in the stools. Any unhealthy bacteria, yeasts or parasites found are tested in the lab to find out to which natural substances or conventional medicines they are both resistant and sensitive.

Endocrine tests

Adrenal Stress Profile: This is a saliva test that checks levels of cortisol and DHEA through the day. Stress is a common problem today and may influence a range of symptoms.

Urine Thyroid Hormones T4/T3: This is considered a more sensitive test than the normal blood test done, and this also tests T3 which generally is not tested so often by GP's. Some people can have the symptoms of low thyroid but the normal test shows it is OK, and this can sometimes be because they are not converting T4 to T3.

Rhythm, Female Hormone Profile: This charts levels of eostrogen and progesterone throughout a typical monthly cycle taking a sample every three days (up to 12 samples). It measures oestrogen, progesterone and testosterone.

Oestrogen Metabolism Assessment: Compares levels of healthy and unhealthy oestrogens.

Although an additional cost lab tests they can be most valuable in assessing what nutritional strategies are likely to be appropriate.

There is now an extended range of tests available that cover many body functions and most nutritional needs. Most of them are easy to do and use either small samples of saliva, urine, sweat or hair, and some involve taking blood.

Many of them you can do yourself and dispatch samples direct to the lab to save time. The labs supply test kits with instructions. Some tests will need a doctor or nurse to take a small sample of blood for you. If you are in London you can go to the labs to have the blood tests done. I have found good functional and nutritional tests to be of paramount importance! I normally assess what the most appropriate lab tests will be (if any) for each individual during the first consultation.

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