CDSA & Parasitology Test by Post

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"Find out if you are digesting and absorbing your food properly?"

A simple stool test can uncover valuable information about your health

Think of your body as a finely tuned engine, and food as its fuel. If you are not completely digesting the foods you are eating and absorbing their nutrients, you're not adequately fuelling your body. The lack of adequate fuel, or the inability to use it properly, can lead to a variety of health problems. Poor digestion or imbalances in your intestinal flora ('good' and 'bad' bacteria) can result in many symptoms, from annoying digestive complaints such as chronic constipation, bloating or wind (flatulence), to abdominal pain and irritable bowel syndrome.

Once food travels to your stomach, you need adequate amounts of hydrochloric acid to break up dietary proteins. You may be among the millions of people who do not produce enough hydrochloric acid. This can cause vitamin and mineral deficiencies, osteoporosis, hardening of the arteries, arthritis, colon cancer, food allergies and autoimmune diseases.

Hydrochloric acid and other substances trigger your pancreas to release enzymes once food moves to the small intestine. Pancreatic enzymes play an important role in the digestion of proteins, fats and carbohydrates. An insufficient amount of pancreatic enzymes can contribute to many of the same problems as inadequate stomach acid.

Nutrients in your food are absorbed into your bloodstream from both the small and large intestine. Food that isn't digested completely will not be absorbed. Partially digested proteins can cause significant digestive irritation (such as colitis, gas or nervous stomach) and can lead to food allergies. Digestion of carbohydrates continues in the small intestine. Certain enzymes are released only by the intestinal villi and friendly bacteria, and damage to these can also inhibit digestion.

Many different microbes live in your intestinal tract, and it's normal to have billions of them. Ideally, you have "friendly" bacteria to aid with digestion, vitamin production and immune defence. Unfortunately, many common activities can destroy the delicate balance of bacteria. Using antibiotics, steroids or the Pill or HRT, or a diet high in fat and sugar wreaks havoc on bacterial levels, leading to imbalances in bacteria and yeast, which can lead to illness.

Chronic infection, food allergies or inadequate nutrition can result in poor immune defences in your intestine. With lowered resistance, less friendly bacteria are able to colonise, and infection or allergies are more likely to develop.

For proper digestive health, your body must carefully co-ordinate the breakdown, absorption and elimination of food. Bacteria must be in proper balance, and immune function must be adequate.

How healthy is your digestive system?

Quick test:

Add up the questions you say yes to below to see if the symptoms you experience indicate
that you might not be digesting and/or absorbing your food properly.

  • Do you often feel bloated
  • Do you have a full feeling in your stomach, especially after eating?
  • Do you often have wind?
  • Do you have irritable bowel syndrome, spastic colon, nervous stomach, loose stools or constipation?
  • Do you avoid eating certain foods because they make you feel uncomfortable?
  • Are you allergic to any foods?
  • Have you had any of the following: asthma, allergies, high blood pressure, heart disease, history of strokes, arthritis, pernicious anaemia, an autoimmune disease or yeast infection?
  • Have you ever taken an antibiotic for more than one month at a time or have you taken antibiotics more than four times in your life?
  • Have you ever taken oral contraceptives, HRT or steroids (cortisone, prednisone, etc.) for extended periods?
  • Do you have abdominal cramps or pains?
  • Do you get heartburn, indigestion or belch after meals?
  • Have you had food poisoning and your bowels have not been 'right' since?

If you answered yes to at least two of the questions, you should take a CDSA (Comprehensive Digestive Stool Analysis) test as soon as possible to check the health of your digestive system.

The CDSA (Comprehensive Digestive Stool Analysis) is a group of 25 tests performed on a stool sample, revealing valuable information about your digestive health.

The CDSA (Comprehensive Digestive Stool Analysis) evaluates:

    • Digestion of food molecules and absorption of nutrients

    • The presence of hidden yeast (e.g. candida) or bacterial infections

    • Intestinal flora balance

    • Intestinal immune function

  • Dietary fibre intake
  • The presence of parasites

The CDSA (Comprehensive Digestive Stool Analysis) checks your digestive health and provides an easy, effective evaluation of how well your digestive tract performs these essential functions. It gives a complete overview of the body's intestinal function evaluating if you are adequately digesting food and absorbing nutrients. It looks at your ability to digest proteins, fats and starches.

So if you would like to know if you are digesting and absorbing the foods you are eating properly or if you have Candida or parasites, then you should send for this CDSA (Comprehensive Digestive Stool Analysis) & Parasitology Test now.

Samples should be returned to the laboratory by Next Day Delivery, Monday- Thursday only. Samples received outside of the suggested postage dates may be discarded and the patient asked to repeat the test.

Please Note: This test is only available by post in the UK. Please allow 5-6 weeks to receive your results.

Please be advised that the tests that you have bought on the Natural Health Practice will be managed by our recommended clinic Glenville Nutrition Clinic.

If you need any further information about how your personal data is used please contact

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This product has been awarded Dr Glenville's Exclusive Seal of Approval.

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Guidance Support

If you are not sure whether this is the right test for you then click 'which test should I take?' and follow the checklist which will help to ensure you have made the correct choice.

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