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Blood fluids WSJ Crossword Clue

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Frequently Asked Questions About This Clue

Blood fluids
The most common and recent 4-letter answer for "Blood fluids" is SERA.
The clue 'Blood fluids' refers to the plural form of 'serum,' which is a component of blood. 'Sera' is the plural of 'serum,' fitting the clue's requirement for a plural answer.
This clue was last seen in the WSJ Crossword on October 17, 2026.
Sera are the clear, yellowish fluids that remain after blood has clotted, devoid of cells and clotting factors.
Crime lab fluids, Lab liquids, Word repeated after “Que” in a song title, Blood bank supply, Lab liquids

The clue “Blood fluids” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated October 17 2026, the definitive 4-letter answer is: SERA.

Expert Tip: When you’re stuck, try to analyze the structure of the clue itself. Is it a direct definition, a pun, a fill-in-the-blank, or a pop culture reference? Identifying the type of clue you’re dealing with is a key skill for improving your solving speed.