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Protein S

Coagulation factors are proteins in your blood. They help form blood clots to stop bleeding when you have an injury. These proteins are also called clotting factors. You have several different types of clotting factors that are all important for making blood clots.

A coagulation factor test is used to find out if you have a problem with any of your clotting factors that may cause too little or too much blood clotting.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

23 published ranges, each from a named source
Normal
57–131 %
Female · 18 y+
57–131 %
Male · 18 y+
66–143 %
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges).

All source ranges (23)
SourceSexAgeRange
American Board of Internal Medicine (Laboratory Test Reference Ranges) All all ages 57–131 %
ARUP Laboratories Test Directory Female 1 d – 3 mo 15–55 %
ARUP Laboratories Test Directory Female 3 mo – 6 mo 35–92 %
ARUP Laboratories Test Directory Female 6 mo – 12 mo 45–115 %
ARUP Laboratories Test Directory Female 1 y – 5 y 62–120 %
ARUP Laboratories Test Directory Female 6 y 62–130 %
ARUP Laboratories Test Directory Female 7 y – 9 y 62–151 %
ARUP Laboratories Test Directory Female 10 y – 11 y 65–142 %
ARUP Laboratories Test Directory Female 12 y – 13 y 70–140 %
ARUP Laboratories Test Directory Female 14 y – 15 y 55–145 %
ARUP Laboratories Test Directory Female 16 y – 17 y 51–147 %
ARUP Laboratories Test Directory Female 18 y+ 57–131 %
ARUP Laboratories Test Directory Male 1 d – 3 mo 15–55 %
ARUP Laboratories Test Directory Male 3 mo – 6 mo 35–92 %
ARUP Laboratories Test Directory Male 6 mo – 12 mo 45–115 %
ARUP Laboratories Test Directory Male 1 y – 5 y 62–120 %
ARUP Laboratories Test Directory Male 6 y 62–130 %
ARUP Laboratories Test Directory Male 7 y – 9 y 66–140 %
ARUP Laboratories Test Directory Male 10 y – 11 y 65–139 %
ARUP Laboratories Test Directory Male 12 y – 13 y 72–139 %
ARUP Laboratories Test Directory Male 14 y – 15 y 68–145 %
ARUP Laboratories Test Directory Male 16 y – 17 y 77–167 %
ARUP Laboratories Test Directory Male 18 y+ 66–143 %
details
Sample
Serum or plasma · LOINC
Code
LOINC 27822-6 · %
Also known as
Functional assay, Prot S, PS, Control, S prime
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