|Medical Terms related to Kidney
|creatinine||In pediatric patients we have to be careful about normal
values printed on
lab slips, since the normal value printed on the lab slip is usually normal
for an adult, and it is different for many of the tests for kids.
Creatinine comes from normal muscle breakdown(you are always breaking down
and buidling new muscle), so that the normal level is related to muscle mass
in the patient and to kidney function, since the kidneys eliminate it from
the body. So, the smaller you are, the lower your normal creatinine will
be. Approximately, for kids of normal size:
normal for an infant will be: 0.2-0.4 mg/dl
normal for a 2 year old: 0.3-0.4 mg/dl
normal for a 10 year old: 0.5-0.7 mg/dl
normal for a teenage girl 0.6-1.0 mg/dl, depending on size and
normal for a teenage boy: 0.7-1.2 mg/dl, again depending on size and
You can kind of extrapolated in the middle. If a creatinine level is twice
the normal value (should be 0.5 and is 1.0) then kidney function is half
normal, if it is four times normal then kidney function is 25% of normal.
So, if Ahten's creatinine level should be 0.7 mg/dl, then a creatinine of
2.8 mg/dl means that her function is 25% of normal.
Remarkably, you can function and live without dialysis until kidney function
is down to around 10% of normal. (S.C.)