The normal range for neuron-specific enolase is <16.3ng/ml, and 10 times higher than normal should be taken seriously. Neuron-specific enolase is an enzyme synthesized by the nervous system, involved in sugar metabolism in the body, and is also a kind of tumor marker, which can be detected by drawing blood. It can be used to aid in the diagnosis of diseases such as small cell lung cancer and neuroblastoma. If the neuron-specific enolase is 10 times higher than the normal value, it should be taken seriously and may be suffering from malignant diseases. Inaccurate neuron-specific enolase test results can be caused by improper handling during sampling and inflammatory conditions in the body. It is important to note that a single elevated neuron-specific enolase cannot definitively diagnose a disease, but usually needs to be combined with MRI, CT, thoracic and abdominal ultrasound, histopathology, and other tumor markers for further clarification and related treatment.