Protein S activity, Plasma

What Does a Protein S Activity Test Measure?

The Protein S Activity Test evaluates the functional efficiency of Protein S in preventing abnormal blood clots.

It helps doctors to:

• Determine Protein S deficiency, an important cause of thrombophilia.
• Assess patients with unexplained blood clots or recurrent miscarriages.
• Distinguish between inherited and acquired Protein S deficiency.
• Evaluate thrombosis risk in patients with a family history of clotting disorders.
• Monitor individuals on anticoagulant therapy or with liver, kidney, or autoimmune diseases.
• Assess risk in women with pregnancy-related complications such as preeclampsia or stillbirth.

Protein S Activity Test: Who Needs It and Why It’s Done

What Symptoms May Call for a Protein S Activity Test?

You may be advised to undergo this test if you experience or have a history of:

• Unexplained or recurrent blood clots in veins or arteries
• Deep vein thrombosis (DVT) or pulmonary embolism (PE)
• Recurrent miscarriages or pregnancy complications
• Stroke or heart attack at a young age
• Family history of Protein S deficiency or other thrombophilic conditions

Who Should Get a Protein S Activity Test?

The test is recommended for:

• Individuals with personal or family history of venous thromboembolism (VTE)
• Patients with unexplained blood clots or pregnancy loss
• Women using oral contraceptives or hormone replacement therapy
• People with liver disease, vitamin K deficiency, or autoimmune disorders
• Individuals undergoing evaluation for inherited thrombophilia

Why is a Protein S Activity Test Done?

This test is performed to diagnose Protein S deficiency, a key factor in abnormal clot formation. It helps identify individuals at risk for thrombosis, differentiate between inherited and acquired causes, and guide treatment decisions for clot-prevention therapy.

Importance of a Protein S Activity Test

The Protein S Activity Test is crucial in evaluating clotting disorders that can lead to serious conditions such as DVT, PE, or stroke. Identifying Protein S deficiency early allows doctors to prevent future clot-related complications through timely management and treatment.

It also supports pregnancy planning in women with previous clotting complications and assists in monitoring anticoagulant therapy for better outcomes.

Protein S Activity Test Booking & Reports – Metropolis Healthcare

How to Book the Protein S Activity Test and Get Your Reports?

1. Simple Online Booking
   Visit the Metropolis Healthcare website or app to schedule your test or visit your nearest Metropolis Lab.
2. Safe Sample Collection
   A trained professional will collect your citrated plasma sample in a 3.2% sodium citrate vacutainer.
3. Accurate Laboratory Testing
   Your sample is analysed using advanced coagulation methods at NABL & CAP accredited laboratories.
4. Timely Results
   Reports are available by the next day at 1:00 PM.

Is Home Sample Collection for Protein S Activity Test Available Near You?

Home collection for this test is not available due to the specific sample handling requirements. The sample must be processed under controlled conditions at a laboratory facility.

How Long Does It Take to Get a Protein S Activity Test Report?

Reports are generally available the next day after the sample reaches the laboratory.
Note: Reporting time and cost may vary slightly based on your location.

Where Can I See or Get Protein S Activity Test Results?

You can easily access your reports through the Metropolis Healthcare website, mobile app, email, or WhatsApp.

Printed reports can also be collected directly from your nearest Metropolis Lab.

Interpreting Protein S Activity Test Results

What Your Protein S Activity Test Results May Indicate

Understanding Abnormal Protein S Activity Test Results by Parameter

How Should You Prepare for a Protein S Activity Test?

Follow these simple steps to prepare for your test:

• No fasting required: You can eat and drink normally.
• Inform your doctor: Share details of all medications, especially anticoagulants, contraceptives, or hormone therapy.
• Provide complete history: Mention any history of DVT, stroke, surgery, or pregnancy complications.
• Avoid delays: The sample must be frozen quickly after collection for accurate results.

How is a Protein S Activity Test Done? (Step-by-Step Procedure)

The Protein S Activity Test follows a controlled blood collection process:

• Preparation: A tourniquet is applied to make veins visible.
• Cleaning: The site is cleaned using antiseptic.
• Sample Draw: Blood is drawn from a vein into a sodium citrate vacutainer.
• Processing: The plasma is separated, frozen, and tested for Protein S activity using coagulation techniques.

Conditions That May Affect Protein S Activity Test Accuracy

Several factors can influence your test results:

• Anticoagulant medication such as warfarin may reduce Protein S activity.
• Hormonal therapy and oral contraceptives can lower Protein S levels.
• Pregnancy naturally decreases Protein S activity.
• Liver disease, infections, or inflammation can alter test results.
• Vitamin K deficiency affects Protein S production.

Diseases That a Protein S Activity Test Can Help Detect

The Protein S Activity Test helps identify and manage conditions such as:

• Protein S deficiency (inherited or acquired)
• Deep vein thrombosis (DVT)
• Pulmonary embolism (PE)
• Recurrent miscarriages
• Pregnancy complications due to thrombophilia
• Stroke and arterial thrombosis
• Liver disease and disseminated intravascular coagulation (DIC)

Protein S activity Test Price in Different Cities

The cost of a Protein S activity Test may vary depending on your location. Here's a table showing the approximate price range for the Protein S activity Test at Metropolis Healthcare in major Indian cities:

The Protein S activity Test cost may vary depending on the city and the specific tests included in the panel. However, Metropolis Healthcare offers competitive Protein S activity Test prices across major cities in India.

References

1. Dahlbäck B. (2008). Advances in understanding Protein S and its role in anticoagulant function. Thrombosis and Haemostasis, 99(6), 1110–1115. PMID: 18521598
2. Esmon C.T. (2014). The protein C pathway: Regulation of hemostasis and thrombosis. Journal of Thrombosis and Haemostasis, 12(8), 1259–1272. PMID: 24862199
3. Rezende S.M., Simmonds R.E., Lane D.A. (2004). Coagulation, inflammation, and apoptosis: Different roles for Protein S. Blood, 103(4), 1192–1201. PMID: 14551144
4. Saposnik B., et al. (2013). Low Protein S levels and thrombotic risk: Clinical and genetic correlations. American Journal of Clinical Pathology, 139(2), 178–184. PMID: 23355245