Singapore General Hospital will NEVER ask you to transfer money over a call. If in doubt, call the 24/7 ScamShield helpline at 1799, or visit the ScamShield website at www.scamshield.gov.sg.

Help Us Improve Your Experience:

We’d love to hear from you! Rate the SGH website and share your feedback so we can enhance your online experience and serve you better. Click here to rate us

PROTEIN S ANTIGEN, TOTAL

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

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

Method

​ELISA

Reference Interval / Value

​Males     75 - 140%
Females  60 - 140%

Turnaround Time

​2 weeks

Day(s) Test Set up

​Fortnightly

Remarks

Note: Coumadin will lower Protein S level.

Last Updated - 13 Jun 2025