South Bend Medical Foundation - Your Community Laboratory

test directorySearch Results

Click here to search again.

Test Name:
Weil-Felix Test, DA

• SBMF No:
  45140
• Performance Lab Name:
  Focus Diagnostics
• Test Mnemonic:
  WEIL-FELIX
• ABN:
  Not required
• CPT Code:
  86000x3
• LOINC Code:
  21489-0; 21490-8; 21491-6
• Ref Lab Test No:
  41050 (ARUP# 0093143)
• Test Includes:
  Proteus OX-19
  Proteus OX-2
  Proteus OX-K
• Also Known As:
  Proteus OX Febrile Agglutinins
• Also See:
  45389 Febrile Antibodies Panel
• Spec Type:
  Serum
• Spec Container:
  Red top (serum) tube
• Pref Vol:
  1.0 mL
• Min Vol:
  0.3 mL
• Fasting:
  No
• Spec Collect:
  Routine venipuncture
• Spec Process:
  Clot 30 minutes
  Promptly centrifuge 15 minutes
  Immediately transfer serum to separate plastic tube
• Spec Store Transport:
  Room temperature or refrigerated
• Spec Stability:
  1 week room temperature (20-30°C)
  2 months refrigerated (2-8°C)
  3 years frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles
• Methodology:
  Direct Agglutination (DA)
• Clinical Significance:
  Patients infected with Rickettsial species produce antibodies that agglutinate proteus antigens.
• Reference Range:
  

  Proteus OX-19
  <1:20

  Proteus OX-2
  <1:20

  Proteus OX-K
  <1:20

  Interpretive Data:

  <1:20 1:20 - 1:80 > or = 1:160

  Antibody Not Detected Equivocal Antibody Detected

  Patients infected with rickettsial species produce antibodies that agglutinate proteus antigens. The following table demonstrates the association of rickettsial diseases and proteus antigen agglutination.

  Epidemic typhus Murine typhus Spotted Fever Group   Spotted Fever Group Scrub typhus Q Fever

  OX19   + + + - - -

  OX2   - - - + - -

  OX K   - - - - + -

• Additional Test Info:
  This test is referred through ARUP Laboratories
• Day Run:
  Varies
• Time Reported:
  Varies
• Test Type:
  INFECTIOUS ANTIBODY