PROTEIN S ANTIGEN

The PROTEIN S ANTIGEN test measures the level of Protein S, a natural anticoagulant protein produced by the liver that helps regulate blood clot formation. The assay is typically performed by immunoassay on a venous blood sample and provides a quantitative value (reported as percentage or concentration) to help identify reduced Protein S levels that increase thrombosis risk. At-home collection in Dubai is available with prompt laboratory processing and fast reporting to support timely clinical assessment.

This test is most useful when evaluating unexplained venous thromboembolism, recurrent pregnancy loss, or a strong family history of inherited thrombophilia, and when clinicians need to assess bleeding/clotting balance before initiating hormone therapy or changing anticoagulant plans. Results should be interpreted alongside clinical history, concurrent medications (for example anticoagulants or estrogen-containing therapies), and other coagulation tests; always review findings with a physician or hematologist for appropriate management in the UAE healthcare setting.

• Protein S antigen (total)
• Free Protein S antigen
• Reported value with laboratory reference range

• After an unprovoked deep vein thrombosis or pulmonary embolism
• Recurrent pregnancy loss or unexplained fetal loss
• Positive family history of inherited thrombophilia
• Pre-assessment before starting estrogen therapy or combined oral contraceptives
• As part of a comprehensive thrombophilia work-up ordered by a specialist

• At-home venous sample collection by trained phlebotomists in Dubai
• Quantitative assessment of Protein S to aid clotting-risk evaluation
• Fast laboratory processing and electronic reporting for clinician review
• Useful for pregnancy planning and thrombosis prevention strategies
• Performed in UAE-accredited laboratories with standardized reference ranges

• At-home venous blood collection performed by a certified phlebotomist
• Inform the laboratory and clinician about current anticoagulant or hormone therapies
• Avoid testing during an acute thrombosis or immediately after starting anticoagulation—consult your physician
• No fasting required prior to sample collection