False negative results occur when specimens are not kept refrigerated until testing can be done.
Stool sample refrigerate or room temperature.
Make sure your refrigerator is set at least this cold.
Store portion of each stool specimen frozen at less than 15 c for antigen or pcr testing.
Otherwise freeze samples at 70 c.
Refrigerate whole stool process it within 2 hours after collection.
Refrigerate whole stool process it within 2 hours after collection.
When multiple tests are ordered submit separate sample for this test.
Do not add saline or water to sample to liquefy.
Otherwise freeze samples at 70 c.
Transport media is not necessary and may increase false positive results.
Non liquid stool room temperature samples or viscous samples.
Store specimen in fixative at room temperature or refrigerate unpreserved specimen at 4 c.
When possible test within 48 hours after collection.
Store portion of each stool specimen frozen at less than 15 c for antigen or pcr testing.
Store specimen in fixative at room temperature or refrigerate unpreserved specimen at 4 c.
This means the levels of bacteria in the stool sample won t be the same as the levels of bacteria in your digestive system.
Use a gallon sized bag so there is plenty of room.
Collect specimen in clean watertight container.
If the sample is fresh it must be refrigerated and taken to the doctor or lab within two hours.
Sample must be liquid.
Difficile toxin is very unstable and degrades at room temperature in as short as two hours.
If a preservative is included with the container you have been given store it at room temperature for up to 48 hours.
Frozen 20 c 5 gm aliquot from well mixed 24 hr or random stool collection.
5 grams 24 hour or random stool.
Storing a stool sample.
If the levels of bacteria don t match the test results may not be accurate.
Your sample of poo must be fresh if it is not the bacteria in it can multiply.
A portion of unpreserved stool specimen may be frozen at.
Even when refrigerated stool samples don t last very long.