Creatinine 8.9 mg/dl means : causes, treatment, GFR calculation
In this article we discuss what a creatinine value of 8.9 mg /dl means, what are its causes and how to calculate your estimated Glomerular Filtration Rate based on the GFR, as well its implications on your kidney health. We also answer the question about whether a Creatinine level of 8.9 is dangerous, good or bad.Published Date : 2023-07-16T00:31:57.337Z
Updated Date : 2024-04-11T19:29:34.406+05:30
Table of Contents
What is Creatinine?
How is creatinine measured?
What does a creatinine of 8.9 mg/dl mean in men?
What does a creatinine of 8.9 mg/dl mean in women?
Is creatinine 8.9 dangerous?
What is the normal range and is a creatinine of 8.9 mg/dl normal?
What could cause a creatinine level of 8.9?
What other tests should be done if creatinine level is 8.9?
What is the relation between creatinine and kidney function?
Why do doctors ask for GFR if my creatinine level is 8.9?
What is my GFR if my creatinine level is 8.9?
References
Recommended Tests
What is Creatinine?
Serum creatinine is a substance that our body makes as a result of creatine phosphate in our muscles. It is produced all the time at a steady pace. The amount of serum creatinine in our blood depends on how much muscle we have. That's why men usually have higher levels of serum creatinine than women. Interestingly, during pregnancy, the levels of serum creatinine tend to be lower.1
How is creatinine measured?
A serum creatinine lab test is a simple blood test that helps measure the level of creatinine in your body. Before the test, it's important to inform your doctor about any medications or supplements you're taking, as some can affect the results. On the testing day, a healthcare professional will draw a small amount of blood from your arm using a needle. This blood sample is then sent to the lab, where they use special machines to measure the concentration of creatinine. The results of this test can help your doctor assess how well your kidneys are functioning.
Is creatinine 8.9 dangerous?
A creatinine of may be dangerous depending on your gender and age. The tables below highlight the likelihood of a creatinine of being dangerous for different age groups in both men and women. We provide the following tables, based on the estimated GFR corresponding to the value of creatinine.
Table of danger posed by Creatinine 8.9 in male across different ages
| Age Group | Is Creatinne of 8.9 dangerous? |
|---|---|
| 25yrs - 95 yrs | very dangerous, Get immediate medical advice and treatment. |
Table of danger posed by Creatinine 8.9 in female across different ages
| Age Group | Is Creatinne of 8.9 dangerous? |
|---|---|
| 25yrs - 95 yrs | very dangerous, Get immediate medical advice and treatment. |
What is the normal range and is a creatinine of 8.9 mg/dl normal?
The normal range for creatinine in men is 0.73 to 1.18 mg/dl, and in women it is 0.55 to 1.02 mg/dl2. Based on these ranges, a creatinine level of 8.9 is considered abnormal.
What could cause a creatinine level of 8.9?
- Acute kidney injury: The sudden loss of kidney function, usually due to a sudden decrease in blood flow to the kidneys, kidney damage, or blockage of the urinary tract.
- Chronic kidney disease: A long-term condition in which the kidneys are damaged and cannot filter blood effectively, leading to a gradual loss of kidney function.
- Dehydration: Insufficient fluid intake or excessive fluid loss can lead to decreased kidney function and elevated creatinine levels.
- Urinary tract obstruction: Blockage or restriction in the urinary tract, such as kidney stones, can cause a buildup of waste products and elevate creatinine levels.
- Nephrotoxic medications: Certain medications, such as nonsteroidal anti-inflammatory drugs (NSAIDs), antibiotics, and chemotherapy drugs, can damage the kidneys and lead to increased creatinine levels.
- Glomerulonephritis: An inflammation of the tiny filters in the kidneys (glomeruli) that can impair kidney function and cause elevated creatinine levels.
- Polycystic kidney disease: A genetic disorder characterized by the growth of numerous cysts in the kidneys, which can lead to kidney damage and impaired function.
- Renal artery stenosis: Narrowing of the arteries that supply blood to the kidneys can reduce blood flow and affect kidney function.
- Pyelonephritis: A bacterial infection of the kidneys, typically originating from a urinary tract infection, that can cause inflammation and damage to the kidneys.
- Interstitial nephritis: Inflammation of the kidney tubules and surrounding structures, often due to an allergic reaction or certain medications, which can impair kidney function and increase creatinine levels.
What other tests should be done if creatinine level is 8.9?
Serum Electrolytes
The Serum Electrolytes test is important in this case because it helps evaluate the balance of sodium, potassium, and chloride levels in the body, which can be affected by kidney dysfunction. Abnormal electrolyte levels can further indicate the severity of kidney impairment and help guide treatment decisions. Monitoring electrolytes is crucial for managing fluid balance, maintaining nerve and muscle function, and preventing complications such as electrolyte imbalances and cardiac arrhythmias.
Blood Urea
The Blood Urea test is important because it measures the level of urea nitrogen in the blood, which can indicate the efficiency of kidney function. In conjunction with the creatinine test, it can help determine the severity of kidney dysfunction or failure. Elevated levels of blood urea may suggest impaired kidney function in individuals with a creatinine level of 8.9 mg/dl.
Estimated GFR
The Estimated GFR (glomerular filtration rate) test is crucial in this case as it helps determine how well the kidneys are functioning by estimating the amount of blood filtered by the kidneys per minute. With a creatinine level of 8.9 mg/dl, a high Estimated GFR would suggest relatively good kidney function, while a low Estimated GFR would indicate impaired kidney function, prompting further investigation and potential treatment.
HBA1C
The HbA1c test is important in this case as it helps determine the average blood sugar levels over the past 2-3 months. High HbA1c levels indicate poor long-term blood sugar control, which can contribute to kidney damage. Monitoring HbA1c levels can aid in assessing the risk and progression of kidney disease in patients with high creatinine levels.
LDH
The LDH test is important in this case because it can help determine the cause of the high creatinine levels. Elevated LDH levels may indicate tissue damage or cell death, which could be contributing to the kidney dysfunction. Additionally, LDH levels can provide insight into the severity of the condition and help guide treatment decisions.
Random Sugar
The Random Sugar test is important in this case because it helps to evaluate the patient's blood glucose levels, which can indicate the presence of diabetes. Diabetes can affect kidney function, and a high creatinine level may be a sign of kidney damage. Monitoring blood sugar levels is crucial in managing and preventing further complications in individuals with elevated creatinine levels.
What is the relation between creatinine and kidney function?
Creatinine, a chemical naturally synthesized within the body, maintains a steady production rate. The renal system diligently sieves out creatinine, leaving no trace in urine. However, when kidney functionality becomes impaired for various causes, the levels of creatinine surge. Consequently, measuring creatinine serves as a remarkably valuable technique to assess kidney performance.
Why do doctors ask for GFR if my creatinine level is 8.9?
Glomerular Filtration Rate or GFR is the rate at which a given volume of blood is cleared of any substance every unit of time. This basically is a measure of the filtration capacity of the kidney. Even a small reduction in GFR can have consequences in patients who already have comorbidities. The GFR is calculated from the level of creatinine in the blood using a variety of equations like the MDRD equation given as follows : GFR (mL/min/1.73 m2) = 175 × (Scr)-1.154 × (Age)-0.203 × (0.742 if female) × (1.212 if African American). Using this formula the value of GFR can be calculated just by knowing the level of creatinine in the blood.
What is my GFR if my creatinine level is 8.9?
Estimated Glomerular Filtration Rate (GFR) for a creatinine value of 8.9
| Age in Years | Estimated Glomerular Filtration Rate (GFR) | GFR Grade |
|---|---|---|
| 18 yrs | Male : 7.81 mL/min/1.73 m2 Female : 5.79 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 19 yrs | Male : 7.72 mL/min/1.73 m2 Female : 5.73 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 20 yrs | Male : 7.64 mL/min/1.73 m2 Female : 5.67 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 21 yrs | Male : 7.57 mL/min/1.73 m2 Female : 5.62 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 22 yrs | Male : 7.5 mL/min/1.73 m2 Female : 5.56 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 23 yrs | Male : 7.43 mL/min/1.73 m2 Female : 5.51 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 24 yrs | Male : 7.37 mL/min/1.73 m2 Female : 5.47 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 25 yrs | Male : 7.31 mL/min/1.73 m2 Female : 5.42 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 26 yrs | Male : 7.25 mL/min/1.73 m2 Female : 5.38 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 27 yrs | Male : 7.19 mL/min/1.73 m2 Female : 5.34 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 28 yrs | Male : 7.14 mL/min/1.73 m2 Female : 5.3 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 29 yrs | Male : 7.09 mL/min/1.73 m2 Female : 5.26 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 30 yrs | Male : 7.04 mL/min/1.73 m2 Female : 5.22 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 31 yrs | Male : 6.99 mL/min/1.73 m2 Female : 5.19 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 32 yrs | Male : 6.95 mL/min/1.73 m2 Female : 5.16 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 33 yrs | Male : 6.91 mL/min/1.73 m2 Female : 5.12 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 34 yrs | Male : 6.86 mL/min/1.73 m2 Female : 5.09 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 35 yrs | Male : 6.82 mL/min/1.73 m2 Female : 5.06 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 36 yrs | Male : 6.78 mL/min/1.73 m2 Female : 5.03 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 37 yrs | Male : 6.75 mL/min/1.73 m2 Female : 5.01 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 38 yrs | Male : 6.71 mL/min/1.73 m2 Female : 4.98 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 39 yrs | Male : 6.68 mL/min/1.73 m2 Female : 4.95 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 40 yrs | Male : 6.64 mL/min/1.73 m2 Female : 4.93 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 41 yrs | Male : 6.61 mL/min/1.73 m2 Female : 4.9 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 42 yrs | Male : 6.58 mL/min/1.73 m2 Female : 4.88 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 43 yrs | Male : 6.54 mL/min/1.73 m2 Female : 4.86 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 44 yrs | Male : 6.51 mL/min/1.73 m2 Female : 4.83 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 45 yrs | Male : 6.48 mL/min/1.73 m2 Female : 4.81 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 46 yrs | Male : 6.46 mL/min/1.73 m2 Female : 4.79 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 47 yrs | Male : 6.43 mL/min/1.73 m2 Female : 4.77 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 48 yrs | Male : 6.4 mL/min/1.73 m2 Female : 4.75 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 49 yrs | Male : 6.37 mL/min/1.73 m2 Female : 4.73 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 50 yrs | Male : 6.35 mL/min/1.73 m2 Female : 4.71 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 51 yrs | Male : 6.32 mL/min/1.73 m2 Female : 4.69 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 52 yrs | Male : 6.3 mL/min/1.73 m2 Female : 4.67 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 53 yrs | Male : 6.27 mL/min/1.73 m2 Female : 4.65 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 54 yrs | Male : 6.25 mL/min/1.73 m2 Female : 4.64 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 55 yrs | Male : 6.23 mL/min/1.73 m2 Female : 4.62 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 56 yrs | Male : 6.2 mL/min/1.73 m2 Female : 4.6 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 57 yrs | Male : 6.18 mL/min/1.73 m2 Female : 4.59 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 58 yrs | Male : 6.16 mL/min/1.73 m2 Female : 4.57 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 59 yrs | Male : 6.14 mL/min/1.73 m2 Female : 4.55 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 60 yrs | Male : 6.12 mL/min/1.73 m2 Female : 4.54 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 61 yrs | Male : 6.1 mL/min/1.73 m2 Female : 4.52 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 62 yrs | Male : 6.08 mL/min/1.73 m2 Female : 4.51 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 63 yrs | Male : 6.06 mL/min/1.73 m2 Female : 4.49 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 64 yrs | Male : 6.04 mL/min/1.73 m2 Female : 4.48 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 65 yrs | Male : 6.02 mL/min/1.73 m2 Female : 4.47 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 66 yrs | Male : 6.0 mL/min/1.73 m2 Female : 4.45 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 67 yrs | Male : 5.98 mL/min/1.73 m2 Female : 4.44 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 68 yrs | Male : 5.96 mL/min/1.73 m2 Female : 4.42 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 69 yrs | Male : 5.95 mL/min/1.73 m2 Female : 4.41 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 70 yrs | Male : 5.93 mL/min/1.73 m2 Female : 4.4 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 71 yrs | Male : 5.91 mL/min/1.73 m2 Female : 4.39 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 72 yrs | Male : 5.89 mL/min/1.73 m2 Female : 4.37 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 73 yrs | Male : 5.88 mL/min/1.73 m2 Female : 4.36 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 74 yrs | Male : 5.86 mL/min/1.73 m2 Female : 4.35 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 75 yrs | Male : 5.85 mL/min/1.73 m2 Female : 4.34 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 76 yrs | Male : 5.83 mL/min/1.73 m2 Female : 4.33 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 77 yrs | Male : 5.81 mL/min/1.73 m2 Female : 4.31 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 78 yrs | Male : 5.8 mL/min/1.73 m2 Female : 4.3 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 79 yrs | Male : 5.78 mL/min/1.73 m2 Female : 4.29 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 80 yrs | Male : 5.77 mL/min/1.73 m2 Female : 4.28 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 81 yrs | Male : 5.75 mL/min/1.73 m2 Female : 4.27 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 82 yrs | Male : 5.74 mL/min/1.73 m2 Female : 4.26 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 83 yrs | Male : 5.73 mL/min/1.73 m2 Female : 4.25 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 84 yrs | Male : 5.71 mL/min/1.73 m2 Female : 4.24 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 85 yrs | Male : 5.7 mL/min/1.73 m2 Female : 4.23 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 86 yrs | Male : 5.69 mL/min/1.73 m2 Female : 4.22 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 87 yrs | Male : 5.67 mL/min/1.73 m2 Female : 4.21 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 88 yrs | Male : 5.66 mL/min/1.73 m2 Female : 4.2 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 89 yrs | Male : 5.65 mL/min/1.73 m2 Female : 4.19 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 90 yrs | Male : 5.63 mL/min/1.73 m2 Female : 4.18 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 91 yrs | Male : 5.62 mL/min/1.73 m2 Female : 4.17 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 92 yrs | Male : 5.61 mL/min/1.73 m2 Female : 4.16 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 93 yrs | Male : 5.6 mL/min/1.73 m2 Female : 4.15 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 94 yrs | Male : 5.58 mL/min/1.73 m2 Female : 4.14 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
| 95 yrs | Male : 5.57 mL/min/1.73 m2 Female : 4.13 mL/min/1.73 m2 | GFR Grade G5 : Kidney Failure |
References
Authorotative articles on serum creatinine
Recommended Tests
The following tests are recommeded as additional investigations for a creatinine of 8.9
HBA1C
Visit HBA1C Test to know more
Electrolytes
Visit Electrolytes to know more
Kidney Profile
Visit Kidney Profile to know more
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Dr.Bhargav Raut is a qualified Pathologist, with over 5 years of experience in the field
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