The best replacement for urine is amniotic fluid.

The best alternatives to urine are rated as following:
★★★★★  amniotic fluid
★★★★  hair drug test
★★★★  blood pregnancy test
★★★  saliva drug testing
★★★  sweat
★★★  blood drug testing
★★  discharge
★★  water breaking
★★  serum osmolality
★★  blood drug test
★★  blood test
★★  urea
★★  serum pregnancy test
★  blood hcg
★  menstrual blood
★  serum hcg
★  spotting
★  filtrate
★  leaking amniotic fluid
★  blood hcg levels
★  period
★  amniotic fluid leakage
★  stool
  amniotic fluid leak
  water leaking
  blood testing
  kidney infection
  blood
  blood test for pregnancy
  saliva drug test

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

Other search terms related to urine and their ratings are:
★★★★★ blood
★★★★ odor
★★★ strong smell
★★ strong odor
★ smell
★ blood and pain
★ white blood cells
★ foam
★ bleach
★ ammonia smell
★ kidney stones
bad odor
uti
strong ammonia smell
blood clots
You have in mind a companion for urine and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of urine in all years. Click on graph for more.
urine
amniotic fluid
hair drug test