Stool Samples

Routine Bacterial Stool Culture

  1. Submit a walnut-size (about 2 Tbsp liquid) portion of fresh stool in a clean, leak-proof container.
  2. If a delay of 2 hours or more for the specimen to reach the laboratory is anticipated, submit a portion of stool in a CaryBlair® transport tube or enteric transport media.
  3. Refrigerate the specimen if transport exceeds 2 hours.

Ova and Parasites

  1. Submit a walnut-size (about 2 Tbsp liquid) portion of fresh stool in a clean, leak-proof container.
  2. Multiple specimens for ova and parasites must be collected at least 24 hours apart, and each must be submitted immediately after collection or transported in a preservative (supplied by PLS).
  3. Specimens may be refrigerated.
  4. If amoebic dysentery is suspected, transport to lab IMMEDIATELY at room temperature.

Clostridium difficile Toxin or Rotavirus

  1. Submit a walnut-size (pea-size is acceptable for rotavirus) portion of fresh stool in a clean, leak-proof container.
  2. Refrigerate the specimen.

Routine Viral Stool Culture

 

  1. Submit a walnut-size (about 2 Tbsp liquid) portion of fresh stool in a clean, leak-proof container.
  2. Refrigerate the specimen.
  3. If a delay of 2 hours or more for the specimen to reach the laboratory is anticipated, collect a small amount of stool on a Dacron® swab and send in viral transport media (VTM).
  4. A rectal swab in VTM is the preferred specimen for enteric virus cultures.

Timed (24 hr) Urine Tests

When your provider requests a test that requires a collection of urine over a period of time such as 12, 18, 24, 36 or 48 hours:

This collection must be performed in a very specific manner to ensure accurate and reliable test results.  For some tests, the Patient Service Center (PSC) staff may also have to collect a blood sample either before or after urine collection, and they may also require you to provide other information such as current height and weight).

 

Please note the following instructions before beginning your collection process.

  1. Some samples require PSC staff to add a preservative to the container prior to collection.  Some preservatives are very irritating, and patients are cautioned not to urinate directly into the collection container when preservatives are present.
  2. Some collections may require you to refrigerate the sample during the collection process.  even if a preservative has been added.
  3. When beginning the collection, your bladder should be emptied upon arising in the morning.  Discard this urine.  Note the time and date on the jugs label.
  4. From this time on, collect all urine passed throughout the prescribed period and pour it into the container(s) provided.  Remember that you should not urinate directly into the container because a preservative could be harmful if it is splashed on your skin.
  5. The final collection should be made upon emptying your bladder the following morning at the same time the test was begun on the previous day.
  6. The entire specimen should be delivered to the PSC as soon as possible after collection is complete.
  7. Some procedures require a current height and weight of the patient being tested.  Please bring this information with you to the PSC.
  8. Some procedures require that a blood sample be drawn with the urine.  Generally, this sample must be collected within 24 hours of the time that the urine collection is completed to ensure accuracy.

If you have an accident or forget to save some of the urine, return the container to the PSC to exchange for another one.  There will be no extra charge.  You will need to restart the collection however.

Lipids and Other Tests That Require Fasting

  1. The test should not be done if you have an acute infection (such as a cold or flu), or if you have been seriously ill in the week prior to the test.
  2. You should be on a normal diet for at least one week prior to the test, with a minimal alcohol intake during that period.
  3. Have nothing to eat or drink except water for approximately 12 hours prior to the test.

Oral Glucose Tolerance Test

 

  1. Call a Patient Service Center to schedule an appointment for a glucose tolerance test.

  2. Patient should eat a carbohydrate-loaded diet for three consecutive days prior to the test.
    A sample menu might include:

    BREAKFAST
    • Cereal (cooked or dry)
    • Milk
    • Sugar
    • Bread or toast
    LUNCH
    • Meat, cheese or egg (main dish or sandwich)
    • Beverage
    • Dessert
    DINNER
    • Meat
    • Vegetable
    • Potato, rice or noodles
    • Bread or roll
    • Beverage
    • Dessert
  3. No food or drink except water after 8:00 pm the night before the test.

  4. No coffee, smoking or unusual exercise for 8 hours before the procedure or during the test period. Patient must remain at specimen collection station until completion of all drawings.

  5. Patient may have nothing by mouth except water during the test period.

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