This page lists every known solution for the clue “Kidney Waste” in Crossword Challenge. Because this clue can appear in different puzzles (levels) with different required answers, we first list all the answers, then show which one appears in each puzzle below.
Kidney Waste Crossword Challenge Answers (All Variants)
Urea
If more than one answer is listed, open your puzzle page below to confirm the one used there.
All Known Answers for Kidney Waste Clue
Puzzle 1538 —
Puzzle 1548 —
Puzzle 1691 —
Puzzle 1722 —
Puzzle 1810 —
Puzzle 2034 —
Where This Clue Appears
Last Checked: May 04, 2026