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Test ID: Fine Needle Aspiration Biopsy
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Fine Needle Aspiration Biopsy
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Useful For
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Fine Needle Aspiration Biopsy is mainly used to investigate suspected neoplastic disease but is also of value in the diagnosis of non-neoplastic conditions such as cysts, tissue hyperplasia, inflammatory processes and more metabolic and degenerative disorders.
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Method name and description
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Fine Neede Aspiration Biopsy
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Aliases
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FNAB
FNA,
Fine needle biopsy,
Aspiration biopsy
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Specimen type / Specimen volume / Specimen container
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The specimen vary depending upon the site.
Container/Tube: Microscope slide
Specimen Volume: A few drops of aspirate are required for microscopic examination.
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Relevant clinical information to be provided
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The clinician must state in the order and clinical data the laterality of the collection site, whether left vs. right, anterior vs. posterior or superior vs. inferior.
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Storage and transport instructions
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Specimen Rejection Criteria
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- Insufficient Material: Samples that do not meet minimum cellularity requirements are reported as unsatisfactory.
- Inappropriate Fixative: Samples submitted in formalin or incorrect preservatives, rather than being air-dried or alcohol-fixed as required.
- Labeling Errors: Unlabeled or mislabeled specimens.
- Poor Preparation: Unsatisfactory smear preparation and/or inadequate clinical information provided.
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Biological reference intervals and clinical decision values
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Fine needle aspiration cytology has become a widely used diagnostic tool. In many instances, needle aspirations provide the sole means for establishing a patient's therapeutic course. The initial steps of this procedure, including localization of the lesion, insertion of the needle into the field, and mechanical aspiration of the sample, require the medical expertise of a practiced clinician.
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Turnaround time / Days and times test performed / Specimen retention time
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5 working days. Note: Unless cell block requires immunostains or special stain, will be 7 days.
Routine: Sunday-Thursday 7:00am-3:00PM
2 weeks
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