serum creatinine test Metropolis Healthcare.jpg

Creatinine is a waste material that is produced during the normal wear and tear of the muscles of the body. Your muscles have a high-energy molecule, called creatine phosphate. Creatinine is the by-product of creatine phosphate, which is produced at a constant rate and cleared from the blood by the kidneys.

Each one of us has creatinine in the blood. If the creatinine clearance is decreased, it results in increased blood (or serum) creatinine. A rise in serum creatinine is an indicator of kidney impairment.

What is the normal level of creatinine?

The normal range of creatinine varies with age, race, gender, and body size.
In general,

  • The normal range of creatinine for adult men: 0.74 to 1.35 mg/dL
  • The normal range of creatinine for adult women: 0.59 to 1.04 mg/dL

In general, while muscular young or middle-aged adults may have more creatinine in their blood than the general population, elderly people may have lower creatinine. For people who are dealing with malnutrition, severe weight loss, and chronic conditions, creatinine levels might be lower than other people of the same age group, owing to a reduction in muscle mass over time.

When do you need a creatinine test?

You may need to get your creatinine levels tested if you have symptoms of kidney disease, are at risk of getting kidney problems, or want to check your kidney health.

The following symptoms can be suggestive of health issues related to the kidneys: 

-Fatigue, not attributed to any other cause
-Puffiness around the eyes
-Swelling in your feet and/or ankles
-Frequent and painful urination
-Foamy or bloody urine

Your risk of getting kidney disease is higher if you have:

-A family history of kidney disease
-Type 1 or type 2 diabetes
-High blood pressure

Is knowing creatinine values tell my doctor if my kidneys are working properly?

Your doctor needs to look at how much creatinine is in your blood along with some other important parameters as well. The reason is creatinine levels in your blood can be affected by your age, race, gender, and body size. The best way to know if your kidneys are functioning well is to look at your glomerular filtration rate (GFR) and creatinine. GFR is a measure of how much blood passes through the tiny filters of the kidneys (glomeruli) each minute. If the kidneys are damaged, they shall pass lesser blood to get filtered. Please note that creatinine is considered a late marker of acute kidney injury because kidney function is decreased by almost 50% before a rise in serum creatinine is observed.

What do raised creatinine levels indicate?

Any health condition that impairs the function of your kidneys is likely to cause a spike in serum creatinine levels. It is equally important to identify whether the condition and process leading to kidney dysfunction are recent or chronic. While recent elevations may be more easily reversed and treated, chronic conditions might be difficult to deal with and demand special care.

The most common causes of chronic kidney disease include

-High blood pressure
-Diabetes.

Other causes of elevated blood creatinine levels are:

  • Consumption of a large amount of meat in the diet
  • Certain drugs (for example, cimetidine)
  • Kidney infections, abnormal muscle breakdown (rhabdomyolysis), and urinary tract obstruction.

How do I prepare for a serum creatinine test?

A creatinine blood test does not require fasting to get an accurate result. You can eat and drink the same as you do normally.

What should I do after getting my creatinine test results?

It is important to tell your doctor about any medicines you are currently taking, both prescription and over-the-counter. Some drugs, like cimetidine, chemotherapy drugs, cephalosporin antibiotics, may increase your creatinine levels and impact your test results. Your doctor may take this into consideration when interpreting your lab test results.

Get geared up for a better kidney health

Your kidneys are vital organs that help remove toxic body wastes and optimize your health. Along with getting your serum creatinine and kidney function checked from time to time, keep yourself hydrated and include fresh, leafy vegetables in your diet. Being physically active also helps your kidneys stay healthy and well-functioning. 

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Scientific Tips for Aging Gracefully

The population of the world, as a whole, is living longer. It is thus essential to implement proactive steps to create changes at both individual and environmental levels, which can promote aging in a better way.

The concept of aging well is a fundamental requirement to improve health and well-being in order to enhance length and quality of life. Aging well highlights the importance of maintaining a healthy lifestyle and keeping wellness on priority while growing older.

Here are 7 scientific tips that can help you age gracefully:

  1. Keeping physically active

It has been observed that poor health in old age is mainly caused due to the effects of multiple lifestyle choices, such as physical inactivity, poor diet, and smoking.

Regular exercising lowers the risk of several diseases such as cardiovascular disease, diabetes, etc. Several studies also suggest that aerobic exercises may improve the symptoms of Alzheimer disease. Moreover, certain evidence have demonstrated the beneficial effect of physical activity on aging at cellular levels, causing an increase in energy, flexibility and overall sense of well-being.

Various types of physical activity that can be done are:

  • Simple exercises such as walking, jogging, yoga, weight lifting or a dance class possess multiple benefits as they can control weight, uplift mood, and makes you sleep better
  • A 30 minute-walk every day, it can also be broken into shorter strolls


It has been recommended that an adult should do 2½ - 5 hours per week of moderate-intensity exercise, 1 ¼ - 2 ½ hours per week of vigorous-intensity aerobic exercises, or a combination of these two.


If you haven’t been exercising, discuss with your doctor about how you can get started gradually.

  1. Eating a balanced diet

Diet is shown to play an active part in how well you age. Nutritious diet helps in keeping an individual mentally sharp and gives energy to enjoy day-to-day activities. Eating a balanced diet not only helps you age well, but also prevent oneself against various diseases such as heart diseases, diabetes, etc.

Numerous studies have shown that chronic illnesses, particularly auto-immune diseases such as fibromyalgia and arthritis, can be associated with our diet, hence, a diet rich in anti-inflammatory components such as fresh fruits and vegetables is recommended.

In addition, avoiding processed food with a higher glycemic index can raise your BMI, increase your waistline, and raise your blood sugar. Enough vitamin D level is essential as it helps contribute to bone health as you age. Salt should be kept to minimum to prevent high blood pressure.

The recommended diet for aging well should include the following:

  • Fruits and vegetables
  • Whole-grain cereals, breads, rice, or pasta
  • Lean protein, such as fish and beans
  • Low-fat or fat-free dairy, such as milk, yogurt or cheese that contain vitamin D
  1. Focusing on mental health

Mental health is very crucial as happiness with less stress levels can help a person age gracefully and liver longer and healthier.

Various tips for improving your mental health includes:

  • One should practice the habit of staying optimistic. Keeping a positive outlook can cure stress associated with life problems.
  • One should stay connected as loneliness is harmful for your mental health. A lonelier individual has higher levels of stress hormones that cause inflammation, linked to disorders like arthritis. Meaningful relationships and a strong social network enhance both mental and physical well-being and longevity.
  • Learn to embrace different aspects of life with a positive attitude.
  • Find new hobbies as exploring new and meaningful things can provide a sense of purpose and keep your anxiety levels to minimum. Keep yourself busy to lessen stress about things you can’t control.
  1. Getting enough sleep

The sleeping habit of an adult in this era has been greatly affected by changed lifestyle and work pressure. This sleep-deprived state in turn, leads to fatigue and premature aging of body cells.

It has been observed that insomnia is more common in older adults. Thus, sticking to a sleeping schedule is important as it can keep a body in sync for appropriate sleep. For an uninterrupted sleep:

  • Keep the room a little cooler and dark
  • Avoid caffeine or alcohol in the evening
  • Avoid electronics before bedtime which emit blue light.

Usually sleeping hours are majorly dependent on your age, an 8-hours sleep is recommended for an adult for better mental and physical health. It has been reported that our skin cells build and repair themselves during sleep, and that’s why we feel renewed and rejuvenated.

Beneficial effects of appropriate sleep include:

  • Reducing stress and anxiety
  • Lowering the risk of heart disease and stroke
  • Reducing the risk of obesity
  • Improving focus and concentration.
  1. Restricting smoking and alcohol consumption

Smoking and alcohol, both have shown many negative effects on the process of aging. Cigarettes, chewing tobacco, and other products with nicotine can cause ailments like heart disease, cancer, lung and gum disease, etc. Similarly, limit your alcohol consumption to avoid risk of health diseases including liver ailments.

Quitting smoking isn’t easy, but there are resources that can help you quit. Seek the help of a healthcare professional.


It has been reported that your body begins to heal within 20 minutes of your last cigarette.

  1. Scheduling health tests on time

    As you age, your body organs also age. The aging body organs are more prone to get diseased and less likely to repair themselves. By getting your health tests done regularly, you are keeping an eye on the aging body. This helps to identify any health condition at an early stage, and take action. Ensure to get a full body check up done twice a year.
  1. Maintain hydration

    Hydration is vital to our bodies as drinking water regularly helps in releasing out toxins and aids in digestion. Additionally, it aids in sleeping better, and improves focus and weight loss. Adequate water intake can also help you avoid dry, flaky skin and fine lines, which in turn, can help your skin look younger.
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