Specimen Requirements

Acceptable Specimens:

Note: Only 1 ESwab is required when this test and Mycobacteriology culture (LAB877, LAB7000, LAB7001)

Abscess, aspirate, or wound:  ≥1 mL in a leakproof screw-capped, sterile container or 1 ESwab per test request in sterile collection tube

Biopsy or tissue: ≥1 g in a leakproof screw-capped, sterile container

Bronchial or tracheal: ≥5 mL in a leakproof screw-capped, sterile container

Eye: conjunctiva and cornea-1 ESwab Minitip Collection Kit; ocular fluid (anterior chamber, aqueous humor, vitreous)-≥0.5 mL in a leakproof screw-capped, sterile container

Sterile Fluids (pericardial, pleural, synovial, etc.): ≥1 mL in a leakproof screw-capped, sterile container

Gastric aspirate: ≥5 mL in a leakproof screw-capped, sterile container

Sputum: ≥5 mL in a leakproof screw-capped, sterile container

Unacceptable Specimens:

Urine, stool

Specimen collected with ESwab Collection Kit is unacceptable if received without fluid or swab in the transport tube.

Collection Procedure:

Note: Specimen source is required.

Abscess, Aspirate, or Wound
1. Disinfect surface of abscess or wound.
2. Aseptically collect purulent material by aspiration (≥ 1 mL) or by using an ESwab. Frequently, viable organisms are only associated with abscess wall, so adequately sample this area. If material is aspirated, aseptically inject specimen into a leakproof screw-capped, sterile container or a plain, red-top tube.
3. If ESwab is used, return ESwab into transport tube following instructions on kit.
4. Maintain sterility and transport promptly to laboratory.

5. If transport is delayed, keep specimen at room temperature.
 

Biopsy or Tissue
1. Aseptically collect ≥1 g of tissue from border of lesion. Because there may be only a few viable organisms in a lesion, specimen must be large enough to permit their recovery.
2. Place specimen in a leakproof screw-capped, sterile container.
3. Maintain sterility and transport promptly to laboratory.

4. If transport is delayed, keep specimen at room temperature.
 

Bronchial or Tracheal
1. Aseptically collect ≥5 mL.
2. Place specimen in a leakproof screw-capped, sterile container.
3. Maintain sterility and tranport promptly to laboratory.

4. If transport is delayed, refrigerate specimen.
 

Eye - Conjunctiva or cornea

1. Call Barnes-Jewish Hospital Laboratory Customer Service at 314-362-1470 to obtain ESwab Minitip Collection Kit.
2. Collect specimen before application of topical anesthetics because topical anesthetics possess antimicrobial activity.
3. Cleanse skin around eye with mild antiseptic.
4. Gently remove makeup and ointment with sterile cotton and saline.
5. Collect specimen by passing ESwab 2 times over lower conjunctiva or over cornea. Avoid eyelid border and lashes (culture these separately in a similar fashion, if indicated).
6. Place ESwab in transport tube following instructions on kit.

7. Maintain sterility and transport promptly to laboratory.

8. If transport is delayed, keep specimen at room temperature.  

Eye - Ocular fluid (anterior chamber, aqueous humor, vitreous)
1. Aseptically collect ≥0.5 mL of fluid.
2. Place specimen in a leakproof screw-capped, sterile container.
3. Maintain sterility and transport promptly to laboratory.

4. If transport is delayed, keep specime at room temperature.

Sterile Fluid (Pericardial, Pleural, Synovial, etc.)
1. Aseptically collect ≥1 mL of fluid.
2. Place specimen in a leakproof screw-capped, sterile container.
3. Maintain sterility and transport promptly to laboratory.4. If transport is delayed, keep specimen at room temperature.

Gastric Aspirate
1. Aseptically collect ≥5 mL early-morning specimen in a leakproof screw-capped, sterile container.Specimen received in the lab >4 hours between specimen collection and the time the specimen is processed in the lab will be canceled. Specimen received after 900AM will be canceled. It is optimal to collect a specimen each day for 3 consecutive days.  
2. Maintain sterility and transport promptly to laboratory.

Sputum
1. Aseptically collect early-morning specimen in a leakproof screw-capped, sterile container. It is optimal to collect a specimen each day for 3 consecutive days. (Saliva is not acceptable.)
2. Instruct patient to brush his/her teeth and rinse mouth well with water.
3. Have patient remove dentures.
4. Instruct patient to take a deep breath, hold it momentarily, and then cough deeply and vigorously into container. Collect ≥5 mL of discharged material. 
5. Maintain sterility and transport promptly to laboratory.

6. If transport is delayed, refrigerate specimen.