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CSF ProteinAka: Cerebrospinal Fluid Protein

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  1. See Also
    1. Cerebrospinal Fluid
    2. Cerebrospinal Fluid Examination
    3. Lumbar Puncture
  2. Interpretation
    1. Normal
      1. Newborn: <150 mg/dl
      2. Adult: 18 to 58 mg/dl
    2. CSF protein is not related to Serum Protein levels
      1. Low Serum Protein does not cause low CSF protein
  3. Correction of Protein for CSF RBC
    1. Protein rises 1 mg/dl for every 1000 CSF RBCs
    2. Same tube must be used for protein and CSF RBC Count
  4. Increased CSF Protein
    1. Diabetes Mellitus
    2. Brain Tumor
      1. Meningioma
      2. Acoustic Neuroma
      3. Ependymoma
    3. Encapsulated brain abscess
    4. Spinal cord tumor
    5. Multiple Sclerosis
    6. Acute purulent Meningitis
    7. Granulomatous Meningitis
    8. Carcinomatous Meningitis
    9. Syphilis (protein may be normal if longstanding)
    10. Guillain-Barre Syndrome (Infectious polyneuritis)
      1. Protein normal during first few days
      2. Rises after first week
    11. Cushing's Disease
    12. Connective tissue disease
    13. Uremia
    14. Myxedema
    15. Cerebral hemorrhage
  5. Normal CSF Protein
    1. Brainstem Glioma
    2. Viral CNS Infections
    3. Multiple Sclerosis (protein may be mildly elevated)
    4. Ischemic Cerebrovascular Accident
  6. Decreased CSF Protein
    1. Recent Lumbar Puncture
    2. Chronic CSF leakage
    3. May be normal if age <2 years
    4. Acute water intoxication
  7. References
    1. Kooiker in Roberts (1998) Procedures in ER, p. 1067-75
    2. Ravel (1995) Lab Medicine, Mosby, p. 294-9
    3. Tunkel in Mandell (2000) Infectious Disease, p. 974-8
    4. Seehusen (2003) Am Fam Physician 68:1103

Cerebrospinal Fluid Proteins (C0007810)

Definition (MSH)Proteins in the cerebrospinal fluid, normally albumin and globulin present in the ratio of 8 to 1. Increases in protein levels are of diagnostic value in neurological diseases. (Brain and Bannister's Clinical Neurology, 7th ed, p221)
ConceptsAmino Acid, Peptide, or Protein (T116) , Biologically Active Substance (T123)
EnglishCerebrospinal Fluid Proteins, CSF PROTEINS, PROTEINS CSF
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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