A 1.4 creatinine level is not high for most people.
A very muscular person is allowed to have a higher normal creatinine compared with the average individual.
A 1.8 is generally high for even a very muscular athlete.
A 1.3 to 1.5 would not be for many patients.
Serum creatinines over 2 are generally reason for real concern.
Creatinine levels in the blood can vary depending on age and body size.
A creatinine level of greater than 1.2 for women and greater than 1.4 for men may be an early sign that the kidneys are not working properly.
As kidney disease progresses, the level of creatinine in the blood rises.
The normal creatinine range is 0.6–1.1 mg/dL in women and 0.7–1.3 mg/dL in men.
If your creatinine level is any higher than the above normal levels then it can indicate that you have kidney disease or kidney failure.
As long as your creatinine range is 0.6–1.1 mg/dL in women and 0.7–1.3 mg/dL in men then your kidneys are healthy.
Both low levels and high levels of creatinine can be an indicator of kidney disease or kidney failure.
Also iron levels when you have low iron or too much protein in your urine can be an indicator of kidney failure but sometimes the kidney disease can be reversed if treated soon enough.
A normal creatinine level should be in the range is 0.6–1.1 mg/dL in women and 0.7–1.3 mg/dL in men.
You can take some creatine supplements to help increase your creatine levels when they are low but if they are too high then you want to lower the creatinine levels.