Call Us: 803-285-2041
Call Us: 803-285-2041

Protime INR Lab

Regular INR testing is essential when you’re on blood thinners. Our Protime INR Lab makes monitoring simple, accurate, and focused on keeping you safe.

Female doctor smiling and discussing medical information on a clipboard with an older male patient in a wheelchair

What Is a Protime INR Test?

Protime INR (Prothrombin Time/International Normalized Ratio) is a simple test that measures how long it takes your blood to clot. This helps your provider ensure your anticoagulation therapy is working as intended.

You might need Protime INR testing if you:

  • Take warfarin or other blood thinners
  • Have a history of blood clots or atrial fibrillation
  • Are at risk for stroke or clotting disorders

Why Protime INR Testing Matters

If you’re on warfarin (Coumadin®) or another anticoagulant, regular Protime INR testing helps keep your blood clotting levels in the safe, therapeutic range. When they’re too low, you may be at risk of blood clots; too high, and you may be at risk of excessive bleeding.

Many factors, including diet, other medications, or even illness, can affect your INR levels. Consistent monitoring allows your care team to adjust your medication and keep you safe.

Our Protime INR Lab provides:

  • Same-day INR testing and adjustments
  • Close monitoring to keep your levels in the therapeutic range
  • Education and support to help you manage your anticoagulation therapy confidently

We work with you to make your care as safe, convenient, and personalized as possible.

What to Expect at Your Appointment

Your Protime INR test at Carolina Heart Specialists is quick and typically requires only a finger stick or small blood sample. Results are often available the same day, allowing your provider to make immediate adjustments to your medication if needed.

During your visit, we will:

  • Review your current medications and lifestyle factors
  • Perform the Protime INR test
  • Discuss your results and update your treatment plan

Your Role in Safe Anticoagulation Care

You are an important partner in your own safety. To get the most accurate INR results and effective treatment:

  • Take your medication exactly as prescribed
  • Keep a consistent diet, especially with foods high in vitamin K
  • Inform your provider about any new medications or supplements
  • Report unusual bleeding or bruising right away
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Cardiologist in surgical scrubs and mask monitoring a patient's heart scan on a computer screen

Frequently Asked Questions

What is heart failure?

Heart failure occurs when the heart doesn't pump blood as well as it should. 

What can I do to stay heart-healthy and reduce my risk of heart issues?

The most important things you can do to prevent further heart issues and live a long, healthy life are:

  • Follow a heart-healthy diet low in saturated fat, trans fat, sodium, and added sugars. Eat plenty of fruits, vegetables, whole grains, lean proteins and healthy fats.
  • Aim for at least 30 minutes of moderate physical activity daily or as tolerated. Walking, swimming, and other aerobic exercise promotes heart health.
  • Take all prescribed medications to manage blood pressure, cholesterol, diabetes, and other conditions.
  • If you smoke, commit to quitting.
  • Limit alcohol intake.
  • Manage stress levels through yoga, meditation, counseling, or other outlets.
  • Get enough quality sleep each night.
  • Keep all follow-up care appointments to monitor your health.
The more diligently you follow heart-healthy lifestyle habits and manage other health conditions, the better you will feel. We are here to provide support and guidance every step of the way.

What causes high blood pressure and how can I reduce it?

High blood pressure, also known as hypertension, generally develops over time. Common causes include an unhealthy diet, inactivity, obesity, genetics, diabetes, and kidney disease. Getting your blood pressure checked regularly is essential in diagnosis, as high blood pressure typically has no signs or symptoms until it reaches a point where it becomes a hypertensive crisis. 

Lifestyle changes and medications can help lower your blood pressure. Our doctors will work with you to develop a plan to keep you healthy and feeling well.

What causes heart arrhythmias and are they dangerous?

Heart arrhythmias occur when the electrical impulses that coordinate your heartbeat become disrupted. There are different types, with some causes including:

  • Heart disease, high blood pressure, or prior heart attack that has damaged the heart’s electrical system
  • Congenital heart abnormalities present from birth
  • Imbalances in electrolytes like sodium, potassium, or magnesium
  • Effects of caffeine, alcohol, medications, or stimulants
  • Physical causes like sleep apnea or thyroid disorders
  • Stress or strenuous exercise

Sometimes, there is no identifiable cause for an arrhythmia. Whether an arrhythmia is dangerous depends on the type, frequency, and one’s overall heart health. Some may cause bothersome symptoms but are otherwise benign. However, certain arrhythmias can significantly raise the risk of stroke, heart failure, or sudden cardiac arrest. The good news is very effective treatments are available for most arrhythmias.

What are the symptoms of a heart attack?

A heart attack is a serious medical condition. If you suspect you may be having a heart attack, call 911. Common symptoms of a heart attack:

  • Chest pain or discomfort, often described as tightness, pressure, squeezing
  • Pain that radiates to the neck, jaw, shoulders, arms, or back
  • Shortness of breath, nausea, dizziness, sweating
  • Abdominal pain
  • Palpitations or irregular heartbeat
  • Fatigue for days leading up to an event

What tests will I need to diagnose my heart condition?

Common diagnostic tests include an EKG, echocardiogram, stress test, CT scan, or cardiac catheterization. The CHS team will recommend the appropriate tests based on your symptoms and medical history.

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