Ordering Recommendation

Use to assess immunocompetence following Neisseria meningitidis vaccination. To assess suspected immunodeficiency, use pre- and postvaccination serology. Do not use for diagnosis of infection or serotyping.


Quantitative Multiplex Bead Assay




1-8 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Serum separator tube.

Specimen Preparation


Storage/Transport Temperature


Unacceptable Conditions


Reference Interval

N. meningitidis A, C, W-135 and Y, IgG:
0.9 µg/mL or less: Antibody concentration not protective.
1.0-2.0 µg/mL: Equivocal.
2.1 µg/mL or greater: Antibody to Neisseria meningitidis detected. Suggestive of protection.

Responder status is determined according to the ratio of the one month post-vaccination concentration to pre-vaccination concentration of IgG antibodies to N. meningitidis (Types A, C, Y, and W-135) as follows:

1. If the one month post-vaccination concentration is less than 3.0 µg/mL, the patient is considered to be a non-responder.
2. If the one month post-vaccination concentration is greater than or equal to 3.0 µg/mL, a patient with a ratio of greater than or equal to 4 is a good responder, a ratio of  2-4 is a weak responder, and a ratio of less than 2 is considered a non-responder

Interpretive Data


Hotline History
CPT Codes

86741 x4

Component Test Code* Component Chart Name LOINC
2001604 N.meningitidis Type A IgG 28546-0
2001605 N.meningitidis Type C IgG 28547-8
2001606 N.meningitidis Type Y IgG 60466-0
2001607 N.meningitidis Type W-135 IgG 60465-2
  • Meningococcal IgG Vaccine Response
  • N. Meningitidis IgG Vaccine Response
  • Neisseria meningitidis
  • Vaccine Response
Neisseria meningitidis Tetravalent Antibodies (Serogroups A, C, W-135 and Y), IgG