Parasite investigations (faeces stool ova cysts worms giardiasis amoebae cryptosporidium threadworm enterobius)
![Trichuris trichiura ovum](https://www.gloshospitals.nhs.uk/media/images/Trichuris_trichiura_ovum.width-500.jpg)
Routine enteric parasitology testing is performed on stool samples submitted from community and out-patient settings and on in-patients within the first 3 days of admission. Samples from in-patients collected more than 3 days after admission are generally only examined for Clostridium difficile toxin.
Faeces samples are routinely investigated for Cryptosporidium and Giardia lamblia
- Further examination (e.g. concentration) will be performed based on clinical information and history of foreign travel
- Collect 3 stool samples over no more than a 10 day period and no more than one within a single 24 hour period. A sample every other day is ideal.
- Investigation of "hot stools" for amoebic dysentry is available on request
- Stool samples are not recommended for threadworm investigation. A perianal swab is the preferred sample.
Macroscopic examination of worms, worm segments, ticks, lice etc, can be undertaken. Please submit in a sterile container.
Advice on individual cases can be obtained from the Consultant Microbiologist
See also:
Sample requirements
![Stool container with spoon](https://www.gloshospitals.nhs.uk/media/images/Stool_container_with_spoon.width-500.jpg)
For liquid stools do not fill pot more than half full
Stool samples are not recommended for threadworm investigation
![Threadworm sampling kit](https://www.gloshospitals.nhs.uk/media/images/Threadworm_kit_bagged.width-500.jpg)
Threadworm sampling kit
Kits are available from the laboratory on request
Required information
- Travel history - state countries and dates of travel and return
- Date of onset, length of history
- Association with known cases
- Immunocompromise
- Date and time of sample collection
Storage/transport
Store and transport at room temperature. Samples should be transported to the laboratory with minimal delay.
Turnaround time
1 - 3 days