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Pathology and Laboratory Medicine
Test Catalogue

​Gastric Brushings/ Washings


​ ​Specimen Requirements

  • ​Gastric brushings (GB) and gastric washings (GW)
  • Sterile, leak-proof specimen container
  • Microscopic slides and slide mailer or container
​Collection Procedure
  • ​Washings – label container with patient’s last name, first name and personal health number (PHN), date and time of collection and source (GW). Once collected, specimen must immediately be placed on ice to prevent degeneration of cells and transported, along with completed requisition, to Cytology laboratory. Notify staff of specimen delivery.
  • Brushings -- With pencil, label slides with patient's last name, first name and personal health number (PHN).  Roll brush back and forth across slide.  Fix immediately with spray fixative (preferred) or place slide into labelled container of 95 per cent alcohol.  If submitting brush, cut tip off and submerge in labelled container of Cytolyt (preferred) or saline.  Securely tighten container and place in biohazard bag.  Place completed requisition, with label facing out, in outside pouch.  Deliver to Cytology laboratory.
​Required Volume
  • Optimal Volume: 5.0 mL to 40.0 mL
  • Minimum Volume: 1.0 mL
    (Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection)
  • ​Gastric washings – Place on ice and immediately transport to Cytology laboratory
  • Notify staff of specimen delivery
Grounds for Rejection​

Testing Information​ ​

  • ​Monday to Friday (excluding statutory holidays), 7:30 a.m. to 4:00 p.m.
Testing Site​
  • ​SCH
  • ​Microscopic evaluation of liquid-based and conventional cytologic preparation
​Specimen Retention
  • ​Until case is signed out by pathologist
  • Slides are retained for 20 years

Testing Ordering Requirements​ ​

Forms Required

​If you choose to print this information, it is valid only on date of print.

Laboratory Controlled Document LSM-150 v2

Last Modified: Monday, July 18, 2016 |
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