Be Compleat

Diagnostics SIBO / IMO

Are you tired of persistent digestive-related ailments, e.g. bloating, change in bowel movements and frequency or flatulence?  It could be SIBO / IMO (intestinal methanogen overgrowth).

In addition to digestive complaints, it may be accompanied by systemic symptoms – such as chronic fatigue, rosacea, headaches, joint pains, and even depressive states.


About the test

SIBO (Small Intestinal Bacterial Overgrowth) is an overgrowth of bacteria in the small intestine. 

  • It is estimated that there are 10-100 thousand bacteria per 1 ml of intestinal contents. 
  • When this number rises above 100,000/ml, we are dealing with SIBO. 
  • Bacterial overgrowth in the small intestine causes food fermentation and overproduction of gases – hydrogen (SIBO) or methane (IMO).
  • A hydrogen-methane breath test (with CO2 level correction) is used to diagnose SIBO/IMO.  It is a simple, non-invasive and reliable test.
  • Recent studies show that SIBO / IMO may be responsible for 60% to 80% of irritable bowel syndrome (IBS) cases.
  • If you’ve been trying to reduce the discomfort of constant bloating, diarrhea or constipation for a long time, do a breath test.


How to prepare for the breath test

Proper preparation for the test ensures reliable results. Inadequate preparation results in the necessity to cover the cost of materials used for the test.

  • 4 weeks before the test do not perform the breath test if you have had a colonoscopy, barium infusion (swallow/enema), fluoroscopy, ileoscopy, enteroclysis, hydrocolonic therapy in the last 4 weeks.
  • Don’t do the test if you’ve had to take antibiotics in the last 4 weeks.
  • 2-4 weeks before the test don’t consume probiotics, antifungal, herbal / antimicrobial products (e.g. oregano oil).
  • Don’t do the test if you have had an episode of infectious diarrhoea – wait about 2 weeks.
  • At least one week before the test: do not take laxatives (also avoid high doses of magnesium citrate and vitamin C), stool softeners or stool-volumizing supplements. Do not take prokinetics (Erythromycin, Iberogast, etc.).
  • 24 hours before the test follow dietary recommendations focusing on avoiding foods with high fermentation potential. Refrain from intense physical activity.
  • 12-14 hours before the test: fasting – don’t eat or drink. Only still water is allowed to be consumed. Do not smoke cigarettes and other tobacco products. Avoid contact with cigarette smoke (passive smoking). Don’t take unnecessary medications. Give up dietary supplements. Do not chew gum, eat candy, and do not use mouthwashes.
  • 1 hour before the test do not use toothpaste.


Diagnostics and the test procedure

The test measures the levels of hydrogen and methane in the exhaled air.

  • The test takes about 3 hours. 
  • It begins with the collection of the baseline sample – the patient blows through a special mouthpiece into a bag (after proper nutritional preparation for the test and 12 hours of fasting)
  • A sample of the exhaled air is taken with a syringe. 
  • Next the patient is asked to drink a solution with 10 g of lactulose. 
  • After 20 minutes, another sample of exhaled air is collected. 
  • This procedure is repeated at 20 minute intervals for the duration of the test. 
  • Contraindication to the test – diagnosed or suspected postprandial hypoglycemia.

IMPORTANT!  Proper preparation for the test ensures reliable results. Inadequate preparation results in the necessity to cover the cost of materials used for the test.


Test prices

First breath test:

  • for Be Compleat clients: 350 zł,
  • Others: 390 zł.

Consequent breath test: 

  • for Be Compleat clients: 320 zł,
  • Others: 350 zł.

IMPORTANT!  Inadequate preparation for the test results in the necessity to cover the cost of the materials used by the client in the amount of PLN 150.




After the test

After the test is performed, the patient receives the result by email within 24 hours.

  • We provide the description of the result in accordance with the latest global guidelines, using our experience at work.  However, the final interpretation of the result requires a consultation with your attending physician.
  • After consulting and analysing the result of the breath test with your attending physician, we will provide you with comprehensive dietary care.
  • SIBO / IMO-related ailments are in most cases symptoms of more serious health problems.
  • They are sometimes the consequence of improper thyroid function or unstable glycaemia.
  • They can arise from infections or anatomical abnormalities.
  • Determining the real cause and working on the whole lifestyle will allow you to improve your well-being and reduce the likelihood of SIBO / IMO relapse.




  • How long will I wait for a test appointment?

Contact us and we will try to find the next available date for you.

  • How long does the test take?

The duration varies according to the type of test:

Compleat REST – 30 minutes
Compleat ACTIVE – up to 1 hour
Compleat BODY – 30 minutes
Compleat ATHLETE PRO – 2 hours

  • When will I receive the test report?

We process the test results within 7 working days. We will send you the completed report by email and discuss it together.

  • Will the results be discussed and analyzed after the test?

Yes, we discuss each report together.

  • How often should I repeat the tests?

In the case of the following tests:
REST – during active work on changing weight and figure (reduction / building muscle mass) every 8 to 12 weeks, once a year for others.
ACTIVE – If structural limitations are identified, we suggest that the first control test be performed 8 to 12 weeks after the test.
BODY – depending on the phase of the sports season and your goals, we suggest individually selecting the frequency of body composition monitoring.

Preparation for the tests

  • How to prepare for a test?

You can find a detailed description of the preparation here.

Formal issues

  • Is it possible to pay by card?

Yes, you can pay by card or make a transfer.

  • How to make an appointment?

You can make an appointment:
-by calling the number 668 596 444 – available Monday to Friday from 10 am to 5 pm
-by writing to

A client assistant or dietitian will contact you to discuss the possibilities of establishing collaboration.

  • How can I pay for the collaboration?

It is possible to pay in cash, by card or by bank transfer.

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