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Patient Instructions

  • Thyroid Fine Needle Aspiration

Patient Instructions - Thyroid Fine Needle Aspiration

You have had a procedure involving the insertion of a small needle into your thyroid gland. The needle took out a small amount of tissue that will be examined by a doctor that specializes in looking at tissues. Your doctor will notify you of the results of your biopsy. Since this procedure required the insertion of a needle, there is slight risk of bleeding, tenderness and rarely an infection. 


  • You may return to work today.

  • Avoid any vigorous physical activity for 24 hours.

Symptom control

  • If you have pain and tenderness at the site, you may take your usual or recommended pain medication.

  • Do not take any aspirin the day of the biopsy.

  • You may feel more comfortable lying with your head partially raised.

  • Avoid strain on your neck by putting both hands behind your neck to support your head.

  • You may develop a sore throat.

Biopsy site care

  • You may have a small amount of bleeding at the site.

  • If this happens, you should lie down and apply gentle direct pressure to the bleeding for 10 minutes.
    When the bleeding has stopped, apply a new band-aide.

  • You may develop bruises where the needle was inserted.

  • Bruising is normal.

  • The bruises should fade in a week to 10 days.

  • Keep the band-aide on for 24 hours, then you may remove the band-aide and shower.

  • You may put on a clean band-aide or leave the site uncovered.

When to call your provider

  • If you have a fever over 100 degrees.

  • Increased redness or swelling at the site.

  • Persistent drainage or pain around the site.

  • If you experience persistent bleeding, difficulty breathing, neck swelling or difficulty swallowing, please have someone take you to the nearest emergency facility.

  • If you have any other questions, please call:

    • Imaging Services at 320-255-5619, Monday-Friday from 7 a.m. to 5:30 p.m.

    • If you have any questions after these times, please call your provider.

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