Chapter 13: Diagnostic tests
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13.16 Swab sampling: rectum
Essential equipment
- Personal protective equipment
- Appropriate documentation/form
- Sterile bacterial or viral swab (with transport medium)
Pre‐procedure
ActionRationale
- 1.
Introduce yourself to the patient, explain and discuss the procedure with them, and gain their consent to proceed.To ensure that the patient feels at ease, understands the procedure and gives their valid consent (NMC [165], C).
- 2.Ensure a suitable location in which to carry out the procedure.To maintain patient privacy and dignity. E
- 3.Wash hands with bactericidal soap and water, or decontaminate physically clean hands with an alcohol‐based handrub. Put on apron and gloves.To reduce the risk of cross‐infection and specimen contamination (NHS England and NHSI [155], C).
Procedure
- 4.Remove swab from outer packaging.To ensure collection of specimen material. E
- 5.Pass the swab, with care, through the anus into the rectum and rotate gently.To avoid trauma and to ensure that a rectal, not an anal, sample is obtained. E
- 6.If specimen is for suspected threadworm: take swab from the perianal area.Threadworms lay their ova on the perianal skin. E
Post‐procedure
- 7.Remove cap from plastic transport tube.To avoid contamination of the swab. E
- 8.Carefully place swab into plastic transport tube, ensuring it is fully immersed in the transport medium. Ensure cap is firmly secured.To avoid contamination of the swab and to maintain viability of the sampled material during transportation. See manufacturer's guidance. E
- 9.Remove gloves and apron, and wash and/or decontaminate hands.To reduce the risk of cross‐infection (NHS England and NHSI [155], C).
- 10.Label swab immediately.
- 11.Complete microbiology request form (including relevant information such as exact site, nature of specimen and investigation required).
- 12.Arrange prompt delivery to the microbiology laboratory.To achieve optimal conditions for analysis (PHE [189], C).
- 13.Document the procedure in the patient's records.To ensure timely and accurate record keeping (NMC [165], C).