Quick Facts
- Sample: Blood (serum)
- Fasting: No special preparation is required
- Turnaround: 6-10 business days. May take longer based on weather, holiday, or lab delays.
What This Test Measures
The NSE Blood Test measures the level of neuron-specific enolase, a protein, directly in your blood serum. This is a single, directly measured biomarker rather than a calculated ratio or panel of markers.
This test is used in the diagnosis and ongoing monitoring of small cell lung carcinoma (SCLC). It may also be used to help evaluate other neuroendocrine tumors, such as carcinoids, islet cell tumors, and neuroblastomas. It is most often used as a follow-up marker for patients with tumors known to secrete NSE, helping track whether levels fall after treatment or remain elevated over time. This test is not diagnostic on its own and should be interpreted alongside clinical evaluation and other established diagnostic tests.
Benefits
- Directly measures serum NSE, a protein linked to certain tumors
- Supports diagnosis and monitoring of small cell lung carcinoma
- May help evaluate other neuroendocrine tumors, like carcinoids
- Helps track NSE trends after treatment for secreting tumors
- Requires no fasting or special preparation beforehand
- No doctor's order or insurance required to order
Who Is This Test For?
- People being evaluated by a healthcare provider for small cell lung carcinoma
- Patients previously diagnosed with an NSE-secreting tumor
- Individuals in treatment or follow-up care for SCLC
- Patients whose provider is monitoring for tumor persistence or recurrence
- People being evaluated for other neuroendocrine tumors, such as carcinoids or islet cell tumors
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What is the purpose of this test?
This test measures neuron-specific enolase (NSE) in your blood serum. It is used to help diagnose and monitor small cell lung carcinoma (SCLC), and may also assist in evaluating other neuroendocrine tumors, such as carcinoids, islet cell tumors, and neuroblastomas. It is most commonly used as a follow-up marker for tumors that secrete NSE. This test does not diagnose cancer by itself, and results are interpreted alongside clinical evaluation and other diagnostic tests.
2. Who should get this test, and when should it be ordered?
This test may be considered for people being evaluated by a healthcare provider for small cell lung carcinoma or another neuroendocrine tumor, patients previously diagnosed with an NSE-secreting tumor who need ongoing follow-up, or those currently in treatment whose provider wants to track NSE levels over time. As part of a diagnostic workup, it may help evaluate a suspected SCLC or neuroendocrine tumor; as follow-up testing, it can help track whether levels are falling as expected after treatment or remaining elevated. This test does not replace clinical evaluation and does not, by itself, provide a complete cancer assessment.
3. How does this test differ from other cancer-related tests?
Unlike a broader tumor marker panel, this test measures a single biomarker—NSE—directly in blood serum, rather than a calculated ratio or combination of markers. Because NSE values can vary between manufacturers, serial follow-up testing should be performed using the same test each time. The source does not provide a direct comparison to other specific cancer-related tests.
4. Do I need to fast before this test?
No, fasting is not required, and no special preparation is needed before this test.
5. How quickly will I get results?
Results are typically available within 6 to 10 business days. Results may take longer based on weather, holidays, or lab delays.
6. How do I interpret the results?
Interpreting your NSE results depends on your specific level, your medical history, your clinical context, and other relevant findings. An elevated NSE level does not automatically confirm the presence of cancer, since other conditions, including epileptic seizure, encephalitis, brain injury, stroke, and rapidly progressive dementia, can also raise NSE levels. A normal result does not automatically rule out cancer. For patients being followed after treatment, consistent or rising NSE levels, in the absence of another explanation, may suggest a persistent tumor or recurrence, while falling levels are generally expected after successful treatment. Because NSE values can vary between manufacturers, trends should be tracked using the same test over time. Results should always be reviewed alongside clinical evaluation and other established diagnostic tests, and discussed with a qualified healthcare provider.
Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
7. What should I do if my results are abnormal?
Review an abnormal result with a qualified healthcare provider, who may consider additional evaluation based on your overall clinical picture, medical history, and other test results.
8. How often should I get tested?
Testing frequency should be determined by your healthcare provider based on your individual situation. For patients being followed after treatment for an NSE-secreting tumor, your provider may recommend periodic testing to track levels over time, using the same test consistently. There is no fixed testing schedule that applies to everyone.
Pre-test preparation
No special preparation is required before this test, and fasting is not required.
