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How to do a stool test

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How wo do a stool test

When we go to the hospital to check the body, the doctor may let us check the stool, let us know about it next.

Clinical sampling charecteristics that need to be collected from stool specimens:

The patient has  abdominal pain, diarrhea (watery stool, pus and blood in the stool), or accompanied by fever; routine stool examination is abnormal, it is recommend to collect stool specimens for bacterial culture.

Specimen collection and requirements:

The patient has abdominal pain, diarrhea (watery stool, pus and blood in the stool), or accompanied by fever; routine stool examination is abnormal, it is recommend to collect stool specimens for bacterial culture.

Specimen collection and requirements

As far as possible, the collection of specimens should be collecte in a wide-mouth toilet box and sealed with a lid before applying antimicrobial treatment.

However, considering Campylobacter jejuni, Campylobacter sanguis agar medium is requir. Not only does Clostridium difficile need to survive in an anaerobic environment, it is also recommend to collect and inoculate specimens at the bedside, and then immediately put the inoculate specimens in an anaerobic bag and sent it to the laboratory.

Collection method:

(1) Natural defecation method

After the patient has a natural bowel movement in a dry and clean potty (avoid sitting or squatting),

Not only take 2~3g of feces with feces, blood and mucus (1~3ml of flocculent liquid is used as feces), but also put it in a sterile urinal box for inspection.

If there is no mucus, pus, or blood, collect more spots on the stool for examination.

(2) Rectal swab method (patients or infants who have difficulty defecation)

Not only should the area around the anus be washed with soapy water,

but also a sampling cotton swab dipped in sterile saline should be inserted into the anus 4 to 5 cm (children 2 to 3 cm).

The sampling swab is in contact with the surface of the rectal mucosa.

Rotate the swab gently, and stool can be clearly seen on the swab.

Not only should the sampling cotton swab with the stool sample be inserte into the virus sampling tube,but also the cotton swab should be broke near the breaking point,

the cap of the tube should be tightened, a

nd the inspection should be carry out immediately. (Repeat collection of specimens can increase the positive detection rate)

Labels and application forms:

(1)The application form must not only include the patient’s name, medical record number,

collection date, but also write down the time, diagnosis, and related travel history records.

(2)Specimen identification not only requires a unique identification number or bar code,but the label on the specimen also includes the patient’s name, medical record number, collection time, etc.

(3)Fresh specimens submitted for inspection should report the characteristics of feces,

and it should be noted when there is blood on the surface of the specimen or in the specimen.

In fact, stool testing is very useful in clinical practice. It can not only initially understand whether the digestive system has inflammation, hemorrhage, parasitic infection, malignant tumors, etc., but also indirectly determine the functions of the gastrointestinal, pancreas, liver, and gallbladder.

How to do a stool test

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