Recommended Samples for Cytopathology Specimens
Type of Specimen | Sample Required | Comments |
Sputum | Not recommended for the diagnosis of malignancy unless the patient is unfit for other investigations. Samples will not routinely be accepted without prior discussion. | Samples for diagnosis of TB should be sent to Microbiology |
Bronchial Brushings | Place specimen in CytoLyt | Brush may be agitated in cell transport medium to collect residual material. Send fluid to laboratory |
Bronchial Aspirate or washing | Place specimen in CytoLyt. | Change trap before collecting from each site under investigation. |
Transbronchial FNA | Place specimen in CytoLyt | |
Serous fluids | 20-30 mls. Unfixed | |
Voided urine | 20-30mls unfixed, collected mid morning on 3 consecutive mornings | Do not send early morning samples. History of catheterisation must be noted on request form |
Cytoscopic / catheter urine | 20-30 mls Unfixed. | |
Synovial fluid | 5-10 mls unfixed, sent immediately to the laboratory | Detection of crystals required examination of a fresh sample. |
Oesophageal / gastric brushings | Smears made by rotating brush on glass slide(s). Fix slides immediately in alcohol. Alternatively the specimen may be placed in CytoLyt. | Brush may be agitated in cell transport medium to collect residual material. Send fluid to laboratory. |
CSF | At least 2 mls sent immediately to the cytopathology laboratory at the WGH | Cells degenerate rapidly in CSF and sample should be prepared as soon as possible in the laboratory. Since cell counts are normally performed in Microbiology, they will only be done when specifically requested, if there is adequate material and no known risk of infection. |
Fine Needle Aspiration of Solid Masses | 2 smears wet fixed in alcohol plus 2 air dried smears (unfixed) then rinse needle with cell transport fluid (or formaldehyde) to collect all residual cellular material. Alternatively the specimen may be placed in CytoLyt | . |
Fine Needle Aspiration of Cystic Masses | All the fluid up to 50 mls. Unfixed. |