If a doctor calls less than 3 days after a health test, is this a high risk situation?

My mom had 2 health tests this week and less than 3 days after submitting her urine sample and blood sample, the doctors have called our home, my dad could not answer because he was working so it went to voice mail and they told us to call them in the message.

If a doctor calls less than 3 days after a health test, is this a high risk situation?
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