Fine Needle Aspiration Cytology

Also known as: Breast, Breast Cyst Fluids, Lymph Nodes, Salivary Gland, Thyroid

Clinical Use

Order Test

Use

Diagnose primary or metastatic malignant neoplasms; differential diagnosis of benign versus malignant processes

Special Instructions

Not provided.

Limitations

The accuracy of Fine Needle Aspiration Cytology depends on the quality and adequacy of the specimen collected. Inadequate specimens can result in false-negative diagnoses. The procedure is less reliable for distinguishing between certain benign and malignant conditions and might not detect every type of neoplasm. Air drying, improper fixation, and improper labeling can lead to rejected samples. FNAC is limited in assessing the architecture of the tissue, which sometimes requires biopsy for comprehensive evaluation. Confirmatory tests may be required for definitive diagnosis.

Test Details

Methodology

Other

Biomarkers

Targets not provided.

LOINC Codes

Order Codes

11552-7 - Microscopic Tiss FNA-Imp

Result Codes

22633-2 - Path report.site of origin Spec
52797-8 - Dx ICD code
33718-8 - Cytology Tiss FNA Doc Cyto
22638-1 - Path report.comments Imp Spec
22636-5 - Path report.relevant Hx Spec
22634-0 - Path report.gross Spec
22635-7 - Path report.microscopic Spec Other Stn

Result Turnaround Time

1 day

Specimen

Other

Volume

Not provided

Minimum Volume

Not provided

Container

Slide(s), Coplin jar(s)

Collection Instructions

Use a small gauge needle to avoid dilution with blood. Immobilize the palpable mass, insert the needle, create negative pressure, and use short 'in-and-out' motions. Express material on slides, fix immediately in 95% ethyl alcohol. For cysts, use balanced salt solution and 50% ethanol. Details about the syringe and pressure management are crucial for proper sample collection.