Creatinine levels in a 20 month old boy

Does anyone know what repeat low(very low) levels of creatinine in a twenty month old little boy could indicate(he has multiple health problems, too many to list!!!!!!!!!) Thanks

[angieskidney]

It is not as common but there are problems associated with too low of creatinine levels.

http://www.bchealthguide.org/kbase/topic/medtest/hw4322/results.htm

Low blood creatinine levels. Low blood creatinine levels can mean lower muscle mass caused by a disease, such as muscular dystrophy, or by aging. Low levels can also mean some types of severe liver disease or a diet very low in protein. Pregnancy can also cause low blood creatinine levels.

Low creatinine clearance. Low creatinine clearance levels can mean serious kidney damage is present. Kidney damage can be from conditions such as a life-threatening infection, shock, cancer, low blood flow to the kidneys, or urinary tract blockage. Other conditions, such as heart failure, dehydration, and liver disease (cirrhosis), can also cause low creatinine clearance levels.

Low BUN-to-creatinine ratio A low BUN-to-creatinine ratio may be associated with a diet low in protein, a severe muscle injury called rhabdomyolysis, pregnancy, cirrhosis, or syndrome of inappropriate antidiuretic hormone secretion (SIADH). SIADH sometimes occurs with lung disease, cancer, diseases of the central nervous system, and the use of certain medications.