Low creatinine in pregnant women means that the patient’s creatinine level in the body is found to be lower than the lower limit of the normal reference range through testing. During pregnancy, low creatinine is generally a normal phenomenon, this is because during pregnancy, due to physiological changes in the body, resulting in increased renal blood flow, glomerular filtration rate will increase, creatinine excretion will increase, resulting in lower creatinine levels in the body. In addition, if the loss of appetite in early pregnancy triggers malnutrition, lack of exercise, anemia and so on also easily lead to low creatinine. Besides creatinine, urea, uric acid and creatine may also be low. If the results of the above tests are abnormal, it is recommended to consult a doctor in time, make a clear diagnosis with the help of a doctor, and carry out targeted treatment or therapy, do not take medication without authorization, which may lead to serious consequences.