When muscle mass remains unchanged, the creatinine levels
stay much the same – but if the kidneys are traumatized by injury or damaged through disease, they are unable to deal with this waste product, which means the <span style = 'background-color: #dae8f4'>levels</span>
time. High <span style = 'background-color: #dae8f4'>levels</span>
suggest kidney disease, muscle disease, urinary obstruction, hyperthyroidism, diabetes or arthritis.
In the case of chronic kidney disease, higher than normal BUN levels
and normal creatinine levels
suggest early onset of a problem.