High Blood Pressure Blood Test

What is Hypertension?

Hypertension is a chronic condition characterized by persistently elevated blood pressure that forces the heart to work harder than normal. It is caused by multiple factors including kidney dysfunction, hormonal imbalances in the renin-angiotensin-aldosterone system, and arterial damage that reduces blood vessel flexibility. The Creatinine Serum test is the most important test for hypertension because it evaluates kidney function and detects early organ damage from uncontrolled high blood pressure.

RECOMMENDED TEST Creatinine, Serum
What's included
Fast & easy, results by email & SMS
No extra fees paid at the lab
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
Why Private MD Labs?
90-day money-back guarantee Lab order in minutes Save a trip to the doctor Low prices since 2005 Labs within 2 miles

What causes high blood pressure?

High blood pressure is caused by multiple interconnected factors that force your heart to pump harder than it should. Primary causes include kidney dysfunction that prevents proper fluid and salt regulation, hormonal imbalances in the renin-angiotensin-aldosterone system that controls blood vessel constriction, and arterial stiffening from plaque buildup that reduces blood vessel flexibility. Additional contributing factors include excess sodium intake, chronic stress, obesity, lack of physical activity, smoking, and genetic predisposition. In some cases, underlying conditions like thyroid disorders, sleep apnea, or adrenal gland tumors can trigger secondary hypertension.

What is the best test for high blood pressure?

The Creatinine Serum test is the most important blood test for hypertension because it evaluates kidney function and detects early organ damage from uncontrolled blood pressure. This test measures how well your kidneys filter waste from your blood by calculating your estimated glomerular filtration rate (eGFR), which declines when hypertension damages kidney blood vessels. For comprehensive evaluation, the Microalbumin Random Urine with Creatinine test detects early kidney damage by identifying small amounts of protein leaking into urine before other symptoms appear. The Aldosterone/Plasma Renin Activity Ratio test is essential for identifying hormonal causes by measuring the system that regulates blood pressure through angiotensin II production. Together, these tests help determine whether your high blood pressure is damaging organs and identify underlying hormonal imbalances that may be contributing to your condition.

When should I get tested for high blood pressure?

You should get tested if you have persistent headaches, dizziness, or blurred vision, especially in the morning. Get tested immediately if you experience chest pain, shortness of breath, severe headaches, or nosebleeds, as these can indicate dangerously high blood pressure. Regular testing is crucial if you have a family history of hypertension, are overweight, live a sedentary lifestyle, consume high amounts of salt, smoke, or are over age 40. You should also get tested if you have diabetes, kidney disease, or high cholesterol, as these conditions increase your risk. Annual blood work helps catch kidney damage and hormonal imbalances before serious complications develop.

What are the symptoms of high blood pressure?
High blood pressure is often called the silent killer because most people experience no symptoms until significant organ damage occurs. When symptoms do appear, you might notice persistent headaches (especially in the back of the head upon waking), dizziness or lightheadedness, blurred or double vision, nosebleeds, shortness of breath during normal activities, or a pounding sensation in your chest or ears. Some people experience facial flushing, blood spots in the eyes, or difficulty sleeping. Severe hypertension can cause chest pain, irregular heartbeat, fatigue, confusion, or difficulty breathing. However, you cannot rely on symptoms alone, which is why regular blood pressure monitoring and blood tests to assess organ function are essential for everyone at risk.
Who is at risk for high blood pressure?
You are at higher risk for hypertension if you are over age 55, have a family history of high blood pressure, are African American, or are overweight or obese. Risk increases significantly if you consume a high-sodium diet, drink excessive alcohol, smoke, or lead a sedentary lifestyle with little physical activity. People with chronic conditions like diabetes, kidney disease, high cholesterol, or sleep apnea face substantially elevated risk. Men are at higher risk before age 55, while women face increased risk after menopause. Chronic stress, certain medications (including NSAIDs, decongestants, and birth control pills), and pregnancy can also trigger high blood pressure. If you have multiple risk factors, regular blood pressure monitoring and kidney function testing are essential for early detection and prevention of complications.
What happens if high blood pressure is left untreated?
Untreated hypertension progressively damages blood vessels and organs throughout your body, leading to life-threatening complications. Your heart must work harder, causing the left ventricle to thicken and weaken, which can result in heart failure, heart attack, or sudden cardiac death. Damaged kidney blood vessels reduce filtration capacity, leading to chronic kidney disease and potentially kidney failure requiring dialysis. Weakened or narrowed arteries in your brain increase stroke risk, which can cause permanent disability or death. Hypertension damages the delicate blood vessels in your eyes, leading to vision loss or blindness. It also causes aneurysms, arterial blockages in your legs, sexual dysfunction, memory problems, and cognitive decline. These complications develop silently over years, making regular blood tests to monitor kidney function and cardiovascular markers crucial for preventing irreversible damage.
Can high blood pressure be diagnosed with a blood test?
High blood pressure itself is diagnosed through blood pressure measurements taken with a cuff, not through blood tests. However, blood tests play an essential role in hypertension management by identifying underlying causes, detecting organ damage, and assessing cardiovascular risk factors. The Creatinine Serum test reveals kidney damage by measuring filtration capacity, while the Microalbumin test detects early kidney injury before other symptoms appear. The Aldosterone/Plasma Renin Activity Ratio identifies hormonal imbalances that may be causing your high blood pressure. Blood tests also measure cholesterol levels, blood sugar, and cardiac stress markers like BNP that help predict complications. Your doctor uses these blood tests alongside blood pressure readings to create a complete picture of your cardiovascular health and determine the most effective treatment approach.
How is high blood pressure treated?
High blood pressure is treated through a combination of lifestyle modifications and medications tailored to your specific situation. Lifestyle changes include reducing sodium intake to less than 2,300 mg daily, losing excess weight, exercising for at least 150 minutes weekly, limiting alcohol consumption, quitting smoking, and managing stress through relaxation techniques. Medications are often necessary and include ACE inhibitors or ARBs that relax blood vessels, diuretics that remove excess fluid, calcium channel blockers that prevent vessel constriction, and beta-blockers that slow heart rate. Your doctor may prescribe one medication or a combination based on your blood test results showing kidney function, hormonal levels, and cardiovascular markers. Regular blood work monitors how well treatment is working and detects any medication side effects. Some people benefit from supplements like Coenzyme Q10 or increased riboflavin intake based on blood test results, though these should never replace prescribed medications without medical guidance.
How can I prevent high blood pressure?
You can prevent high blood pressure by maintaining a healthy weight through balanced nutrition and regular physical activity of at least 30 minutes most days of the week. Limit sodium intake to less than 2,300 mg daily by avoiding processed foods, reading nutrition labels, and cooking fresh meals at home. Follow a heart-healthy diet rich in fruits, vegetables, whole grains, lean proteins, and low-fat dairy while limiting saturated fats and added sugars. Manage stress through meditation, deep breathing exercises, yoga, or activities you enjoy. Avoid smoking and limit alcohol to no more than one drink daily for women or two for men. Get 7-9 hours of quality sleep each night, as poor sleep contributes to hypertension. Have your blood pressure checked regularly and get annual blood tests to monitor kidney function, cholesterol levels, and other cardiovascular markers. If you have risk factors like family history or diabetes, work closely with your doctor to catch and address any increases early before they cause damage.
What can I do at home for high blood pressure?
You can manage high blood pressure at home by monitoring your readings regularly with a home blood pressure monitor, taking measurements at the same time daily, and keeping a log to share with your doctor. Practice the DASH diet (Dietary Approaches to Stop Hypertension) by eating fruits, vegetables, whole grains, and low-fat proteins while limiting salt, red meat, and sweets. Incorporate potassium-rich foods like bananas, sweet potatoes, and spinach to help balance sodium levels. Exercise regularly with activities like brisk walking, swimming, or cycling for 30 minutes most days. Reduce caffeine intake if you notice it raises your blood pressure, and limit alcohol consumption. Practice stress-reduction techniques like deep breathing exercises, progressive muscle relaxation, or mindfulness meditation for 10-15 minutes daily. Maintain a healthy weight, ensure adequate sleep, and take all prescribed medications exactly as directed. Consider supplements like Coenzyme Q10 after discussing with your doctor and having blood levels tested. Never stop taking prescribed medications without medical supervision, even if your home readings improve.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Instant orders, results often overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
Testosterone 375 ng/dL
Demo results
Normal Optimal 400 - 1000 High
375 ng/dL

What this means

Your testosterone levels are slightly below the optimal range. While this is not necessarily cause for concern, it may contribute to occasional fatigue, reduced motivation, or lower muscle mass over time.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.

Us vs. Them

Not overhyped or overpriced. Just comprehensive blood testing made simple and for everyone.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.

1,000,000+ blood tests later, here's what our customers say

Google reviews 505 reviews Next
Creatinine, Serum
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

Sample results

Sample image
For you & your coach Health insights Written in human language, backed by science.
Sample image
For you & your doc Classic lab report A familiar and comprehensive lab report.

Ask AI

Your 24/7 Lab Guide

Quick questions:

Which test is right for my symptoms?
What could be causing this?
When should I get tested?
A
Hi, I'm AI. I can help you find the right test, explain results, or prepare for your visit. What can I help with?
Just now
A
AI provides insights, not medical diagnoses.