Plural of Blood

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The Quick Answer
The plural of blood is blood. Blood is a non-countable noun. It has no plural.

The term bloods is often used in the medical profession to shorten blood test samples or blood works.

The Plural of Blood

The plural of blood is blood.
  • A lot of blood, sweat, and tears have gone into this career of mine. (Kevin Hart)
  • Athletics is in my blood. (Haile Gebrselassie)
Bloods is not the plural of blood. Bloods is only acceptable in a medical context. (It is the shortened version of blood works.)

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The Standard Rules for Forming the Plurals

The table below shows the standard rules for forming the plurals of nouns in English.
Type Example of Type Forming the Plural Plural
Most Nouns lamp
scythe		 add s lamps
scythes
Noun Ending s, sh, ch, x or z bus
dress		 add es buses
dresses
Nouns ending [consonant] o hero
zero
tomato		 add either s or es
(There are no rules for this - you have to know.)		 heroes
zeros
tomatoes
Nouns ending [vowel] o patio
ratio 		add s patios
ratios
Nouns ending [consonant] y story
penny		 change the y to an i and add es stories
pennies
Nouns ending [vowel] y storey ()
donkey 		add s storeys
donkeys
Nouns ending f or fe dwarf
hoof 		ves and/or s
(There are no rules - you have to know.)		 dwarfs
hooves or hoofs
Exceptions man
louse 		some nouns undergo a vowel or letters change men
lice
More exceptions blood
sheep 		some nouns do not change at all blood
sheep

Why Is There Confusion over the Plural of Blood?

Confusion arises because of the term bloods, which is used among medical professionals. Bloods is actually a contraction for the terms blood works or blood samples.

Of note, The Bloods (from the slang term blood meaning brother) is the name of a street gang in Los Angeles.
Another Interactive Exercise
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See Also

Unusual pluralsPlural forming table Quirks with forming plurals Forming the plurals of abbreviations Forming the plurals of compound nouns