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PROTEIN S (FUNCTIONAL)

Synonym(s):
Lab Section Category
View write-up
Specimen Required

​3 mL blood containing 0.3 mL of 3.2% sodium citrate

Method

​Clotting

Reference Interval / Value

​Males 75 - 130%
Females    59 - 118%

Turnaround Time

​1 week

Day(s) Test Set up

​Weekly

Remarks

​Note:
- Coumadin will lower Protein S levels.
- The female range is only applicable to females who are not taking oral contraceptives.

Last Updated - 13 Jun 2025