Nutritional and Digestive Health Test

Fasting for approximately 8–10 hours is recommended because the profile includes glucose, insulin and triglycerides. Plain water is permitted.

Most results are usually available within 48 hours after the samples reach the laboratory. Certain results may occasionally take longer.

Anti-tissue transglutaminase antibodies are used to screen for coeliac disease. An abnormal result may require additional blood tests, clinical assessment and sometimes an intestinal biopsy before a diagnosis is confirmed.

No. Continue eating gluten before testing unless a qualified clinician advises otherwise. Removing gluten can cause antibody levels to fall and make the result less reliable.

This depends on the laboratory method. An antibody test can indicate previous exposure and may remain positive after an infection has
resolved. A stool-antigen test or urea-breath test may be recommended to investigate active infection.

The full blood count and iron profile can identify patterns consistent with anaemia and iron deficiency. Vitamin B12 and folate provide
additional information about possible nutritional causes.

Ferritin can rise during infection or inflammation and may sometimes appear normal despite reduced iron availability. It should be
interpreted with iron, transferrin, transferrin saturation, the full blood count and clinical history.

It may identify possible contributors such as anaemia, iron deficiency, low vitamin B12, low folate, vitamin D deficiency, abnormal glucose
regulation or other blood-cell changes. Fatigue can also have causes not included in this profile.

Yes. It may be helpful for people following vegetarian or vegan diets because it assesses vitamin B12, iron, folate, vitamin D, zinc and other
relevant nutritional markers.

Tell the clinic about all supplements you take. Unless advised otherwise, avoid non-essential vitamin and mineral supplements on the
morning of testing.

Yes. Your clinician will review the laboratory findings, explain abnormalities and provide personalised recommendations.

You will receive guidance about appropriate dietary changes, supplementation, repeat testing, further investigation or referral to your GP or
a specialist.

No. Persistent abdominal pain, unexplained weight loss, difficulty swallowing, gastrointestinal bleeding, persistent vomiting or significant
changes in bowel habits require appropriate medical investigation.