15 doctors weighed in:
Nuclear medicine scan thyroid: is there a wait period after doing nuclear medicine scan for hot or cold nodule before a fine needle aspiration biopsy?
15 doctors weighed in

Dr. Akiva Mintz
Nuclear Medicine
7 doctors agree
In brief: Nope
Typically not. The radioactivity decays pretty fast and is typically a super low dose, so it would not interfere.
I have seen people get biopsied the very next day.

In brief: Nope
Typically not. The radioactivity decays pretty fast and is typically a super low dose, so it would not interfere.
I have seen people get biopsied the very next day.
Dr. Akiva Mintz
Dr. Akiva Mintz
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Dr. Quang Nguyen
Internal Medicine - Endocrinology
4 doctors agree
In brief: No
Agree with dr. Rosenblum. No waiting period between nuclear scan and fna.
However, if the nuclear scan did show a hot nodule without other warm or cold areas, then there is no need to biopsy the hot nodule.

In brief: No
Agree with dr. Rosenblum. No waiting period between nuclear scan and fna.
However, if the nuclear scan did show a hot nodule without other warm or cold areas, then there is no need to biopsy the hot nodule.
Dr. Quang Nguyen
Dr. Quang Nguyen
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Dr. Philip Rosenblum
Family Medicine
2 doctors agree
In brief: No waiting period
Understand that this is an evaluation for cancer.
Somebody found a lump or mass in your thyroid gland, and then an ultrasound was done which showed that the lump was not fluid-filled but solid. The scan was done to evaluate and see if the solid mass is functional, working, thyroid gland. If not, the next test is a fine needle aspiration biopsy. There is no waiting period. It's just the next test.

In brief: No waiting period
Understand that this is an evaluation for cancer.
Somebody found a lump or mass in your thyroid gland, and then an ultrasound was done which showed that the lump was not fluid-filled but solid. The scan was done to evaluate and see if the solid mass is functional, working, thyroid gland. If not, the next test is a fine needle aspiration biopsy. There is no waiting period. It's just the next test.
Dr. Philip Rosenblum
Dr. Philip Rosenblum
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1 comment
Dr. Barry Rosen
GJP: the results of your thyroid scan would have no impact on your surgeon's recommendation for surgery since cancers, while traditionally "cold" on scan, can be "warm". Of course, every case is different and unique, but, all else being equal, a cytology report such as the one above warrants surgery.
Dr. Peter Nefcy
Radiology
In brief: No wait.
The nuclear material will not interfere with the biopsy interpretation.
Depending on the isotope used for the scan, the nuclear material will not be detectable within a day or so with the injectable test, and within a week or so with the pill form. The longest wait is usually getting an appointment for needle biopsy.

In brief: No wait.
The nuclear material will not interfere with the biopsy interpretation.
Depending on the isotope used for the scan, the nuclear material will not be detectable within a day or so with the injectable test, and within a week or so with the pill form. The longest wait is usually getting an appointment for needle biopsy.
Dr. Peter Nefcy
Dr. Peter Nefcy
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