
Creatinine levels are an important indicator of kidney health, with fluctuations signaling potential health concerns. If you’ve had a creatinine blood test and found your levels to be 1.7, you may be wondering, “Is creatinine level 1.7 dangerous?” In this article, we will dive deep into what creatinine is, its role in kidney health, and whether a creatinine level of 1.7 poses a threat to your overall well-being.
Understanding Creatinine and Its Level
Creatinine is a waste product produced by muscle metabolism, specifically the breakdown of creatine phosphate, which is used for energy in muscles. It is primarily filtered out of the blood by the kidneys, which makes it an excellent marker for kidney function.
Creatinine Role in Kidney Health
The creatinine level in the blood is an essential measure used by doctors to assess how well your kidneys are functioning. When kidney function declines, the kidneys’ ability to filter creatinine decreases, causing levels to rise.
Is Creatinine Level 1.7 Dangerous?
A creatinine level of 1.7 is slightly above the normal range for many individuals, but whether it’s dangerous depends on various factors, such as age, sex, and overall health. Generally, creatinine levels between 1.2 and 1.5 are considered elevated, and a level of 1.7 can indicate mild to moderate kidney dysfunction in some people.
However, it’s essential to consider the context:
- Age: Older adults tend to have slightly higher creatinine levels due to reduced kidney function with age.
- Gender: Men typically have higher creatinine levels than women due to higher muscle mass.
- Physical condition: People who engage in regular, intense exercise may have higher levels of creatinine due to muscle breakdown.
It’s important to remember that a single creatinine test doesn’t provide a complete picture of your kidney function. Additional tests and clinical evaluation are needed for an accurate diagnosis.
What is the Normal Range of Creatinine Level?
Creatinine levels can vary based on several factors like age, gender, muscle mass, and hydration. Here’s a breakdown of the normal and abnormal ranges of creatinine levels for different groups:
Group | Normal Range (Creatinine in mg/dL) |
---|---|
Adult Men | 0.9 – 1.3 mg/dL |
Adult Women | 0.6 – 1.1 mg/dL |
Children | 0.3 – 0.7 mg/dL |
Elderly | 0.7 – 1.5 mg/dL |
Athletes | 1.0 – 1.5 mg/dL (may be higher based on muscle mass) |
As you can see, creatinine levels vary based on factors like muscle mass and age. Higher levels might not be a concern in some individuals, but if your creatinine level exceeds these ranges significantly, it’s essential to consult a healthcare provider.
Causes of High Creatinine Levels
Several factors can contribute to elevated creatinine levels. Let’s explore the common causes of high creatinine levels.
Excess Workout Load
Strenuous exercise can lead to muscle breakdown, which can increase creatinine levels. When muscles are broken down, creatinine is released into the bloodstream. While this is a temporary spike, if your workout intensity is excessive or if you’re not properly hydrating, this can contribute to elevated creatinine.
Diet and Lifestyle
- A diet high in protein, especially red meat, can cause an increase in creatinine levels.
- Dehydration is another factor—without enough fluid, your kidneys may struggle to filter out waste effectively, including creatinine.
- Smoking and excessive alcohol consumption can also impair kidney function, leading to increased creatinine.
Infection
Certain infections, particularly those that affect the kidneys, such as pyelonephritis, can cause an increase in creatinine levels. Infections can damage kidney tissue and affect the filtration process, leading to higher creatinine levels in the bloodstream.
Medication
Some medications can lead to elevated creatinine levels. Nonsteroidal anti-inflammatory drugs (NSAIDs), certain antibiotics, and medications used to treat high blood pressure (like ACE inhibitors) can sometimes raise creatinine levels. It’s essential to consult a healthcare provider if you’re on medications that could impact your kidney function.
Symptoms of High Creatinine Levels

High creatinine levels often do not present immediate symptoms. However, as kidney function worsens, you may experience the following signs:
- Fatigue and weakness
- Swelling (edema), especially around the ankles and legs
- Shortness of breath
- Nausea and vomiting
- Loss of appetite
- Changes in urine output (e.g., less frequent urination or foamy urine)
If you’re experiencing these symptoms, it’s important to get your creatinine levels checked.
What are the Conditions Associated with High Creatinine Levels?
High creatinine levels can be indicative of various underlying health conditions, particularly those affecting the kidneys. Let’s look at some common conditions:
Cardiovascular Issues
Heart conditions such as high blood pressure and heart failure can lead to reduced kidney function, causing creatinine levels to rise. The kidneys and heart are closely connected, and problems in one organ can affect the other.
Kidney Complications
Chronic kidney disease (CKD) is a primary condition that leads to high creatinine levels. Over time, as kidney function deteriorates, creatinine builds up in the blood. In severe cases, kidney failure may result.
Autoimmune Conditions
Autoimmune diseases like lupus and vasculitis can cause kidney inflammation, leading to impaired kidney function and elevated creatinine levels.
Urinary Tract Issues
Blockages or infections in the urinary tract can prevent normal kidney function, leading to an accumulation of creatinine in the blood. Conditions like kidney stones or urinary retention can result in this.
Diabetic Kidney Disease
High blood sugar levels from uncontrolled diabetes can damage kidney blood vessels, impairing filtration and raising creatinine levels. This condition is known as diabetic nephropathy.
Tests to Diagnose High Creatinine Level
To confirm high creatinine levels and assess kidney function, healthcare providers may recommend the following tests:
- Creatinine Blood Test: Measures the level of creatinine in the blood.
- eGFR (Estimated Glomerular Filtration Rate): Estimates how well the kidneys are filtering waste.
- Urinalysis: Checks for the presence of proteins or blood in the urine, which could indicate kidney problems.
Management of Creatinine Level
Lifestyle Changes & Medication
Managing creatinine levels often involves a combination of lifestyle changes and medication.
- Dietary Modifications: Reducing protein intake, staying hydrated, and avoiding excessive salt can help manage kidney function.
- Medications: Doctors may prescribe medications to control blood pressure, manage diabetes, and treat any underlying conditions that contribute to kidney dysfunction.
When Is Elevated Creatinine Dangerous?
While elevated creatinine levels may not always be immediately dangerous, persistent high levels can indicate significant kidney damage. Chronic kidney disease, heart failure, and other complications can arise if creatinine levels remain high.
Warning Signs That Require Immediate Attention
- Severe swelling, especially around the face and eyes
- Extreme fatigue or weakness
- Shortness of breath or chest pain
- Dramatic changes in urine output
If you experience any of these warning signs, seek medical attention immediately.
FAQs
Understanding Creatinine Levels
A creatinine level of 1.7 is not immediately dangerous but may signal underlying kidney issues that need attention. Understanding the normal creatinine levels, the causes of high creatinine, and the potential complications can help you manage your kidney health effectively. Always consult a healthcare provider for personalized advice and treatment options.
If you suspect that your creatinine levels are elevated, it’s crucial to monitor kidney health and make necessary lifestyle adjustments.

Beth is Cloudmineinc’s senior health editor and a certified personal trainer. She has over 10 years experience as a science journalist and is the author of two books. She deadlifts over 315 lbs.