The best replacement for uptake is free t3.

The best alternatives to uptake are rated as following:
★★★★★  free t3
★★★  take up
★★★  reuptake
★★  reverse t3
★★  intake
★  maximal oxygen uptake
★  thyroid uptake
★  total t3
  thyroid scan
  t3 total

Your alternative for uptake is not listed? Suggest!
Speaking about uptake, one probably shouldn't forget about scan.

Other search terms related to uptake and their ratings are:
★★★★★ scan
★ thyroid scan
imaging
You have in mind a companion for uptake and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of uptake in all years. Click on graph for more.
uptake
free t3
take up