MedDroidLab test guide
Stool Routine Test: normal range & what your result means
Written & medically reviewed by Dr. Sanjay Anbu, MBBS · Last reviewed
Medically reviewedA stool routine test looks at a small sample of stool for infection, worms, hidden blood and signs of poor digestion. It is common for diarrhoea, stomach pain and anaemia.
About the test
Why the stool test test is done
- Diarrhoea, especially lasting more than a few days or with blood or mucus
- Suspected worm infection or amoebic infection
- Unexplained anaemia — looking for hidden (occult) blood loss
Reference range
Typical adult range
| Measure | Typical adult range |
|---|---|
| Colour / consistency | Brown, formed |
| Mucus | Absent |
| Occult blood | Negative |
| Pus cells | Nil or occasional |
| Red blood cells | Nil |
| Ova, cysts, parasites | Not seen |
| Reducing substances | Negative |
Typical adult range; labs differ — use the range on your report. Ranges also vary with age, sex, pregnancy and the method used. Your doctor interprets the result alongside your symptoms and history.
Results
What an ABNORMAL result can mean
- Pus cells and mucus: bowel infection or inflammation
- Ova, cysts or trophozoites: worms, giardia or amoeba
- Occult blood positive: bleeding somewhere in the gut — from piles or ulcers to, less commonly, polyps or cancer; needs follow-up
- Reducing substances: sugar not being absorbed, as in lactose intolerance
Results
What a NORMAL result means
- No infection, parasites or blood detected in this sample
- Parasites can be missed in one sample — a doctor may ask for repeat samples
Preparation
Before the test
- Use the clean container from the lab; do not mix with urine or water
- Deliver the sample quickly, usually within 1–2 hours
- Tell the lab about recent antibiotics or worm medicines
Red flags
When to get urgent help
- Black, tarry stools or large amounts of blood — seek urgent care
- Diarrhoea with signs of dehydration (very little urine, dizziness, drowsiness)
- Severe stomach pain with fever
Explore more
Related pages
References
Sources & further reading
Frequently asked questions
What does occult blood positive mean?
It means blood was found that cannot be seen by eye. Causes range from piles and ulcers to polyps or cancer, so a doctor will usually advise further tests.
Can a stool test detect worms?
Yes, eggs (ova) or the parasites themselves may be seen under the microscope. Because they are passed intermittently, repeat samples are sometimes needed.
How soon should a stool sample reach the lab?
Ideally within an hour or two, as some parasites are only seen in fresh samples. Follow your lab’s instructions.