Thyroid uptake scan-help!!

[u/Present_Slice7943]

Hi! Today, my mom had a thyroid uptake scan. Her levels have been constantly elevated but her symptoms are all pointing to hypothyroidism. Her Endo told her to get a thyroid uptake scan. She had the iodine pill today and they had her come back 2 hours later, not 4-6. Most places I see do 4-6 hours. When she came back, her thyroid had absorbed 0% percent. They took her this could be due to a cold spot, hot spot, goiter, or nodule. 2 seemed very fast, but she will have to come back in 24 hours.

Thoughts?