Specific Gravity (CSF)

Specimen Required

CSF

Fasting Required

Purpose of the Test

The specific gravity (CSF) test may be ordered to help diagnose and monitor various conditions affecting the central nervous system, such as meningitis, encephalitis, tumors, and multiple sclerosis. It may also be used to monitor the effectiveness of treatment for these conditions.

When this test is required

The specific gravity (CSF) test may be requested when a person presents with symptoms of a central nervous system condition, such as fever, headache, neck stiffness, confusion, seizures, and muscle weakness. The test may also be ordered as part of routine physical examinations or preoperative testing.

What the Test Detects

The specific gravity (CSF) test measures the density of cerebrospinal fluid (CSF) in relation to water. The test provides information on the concentration of substances, such as electrolytes and proteins, in the CSF.

Preparation for the Test

There may be specific instructions to follow prior to the lumbar puncture procedure, such as avoiding certain medications or fasting for a certain amount of time. It is important to follow your healthcare provider’s instructions carefully. Additionally, it may be helpful to inform your healthcare provider of any medical conditions you have or medications you are taking, as they may affect the results of the test. It is also important to inform your healthcare provider if you have any allergies or bleeding disorders.

Sample Requirements

The specific gravity (CSF) test requires a sample of cerebrospinal fluid (CSF) that surrounds the brain and spinal cord. A healthcare provider will collect the sample by inserting a needle into the spinal canal, typically in the lower back area. The procedure is known as a lumbar puncture or a spinal tap.

Additional Notes

The specific gravity (CSF) test is typically performed as part of a lumbar puncture or a spinal tap procedure. This procedure involves inserting a needle into the spinal canal to collect a sample of the CSF. It is important to follow your healthcare provider’s instructions carefully to prepare for the procedure and inform them of any medical conditions or medications you are taking. After the procedure, you may be advised to lie flat for a certain period of time to prevent complications. It is important to discuss any questions or concerns you may have with your healthcare provider.

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