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Test ID ECHO Echovirus Antibody Panel, CF (Serum)

Specimen Required

Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 1 mL of serum refrigerated in a plastic vial.


Method Name

Complement Fixation (CF)

Reporting Name

Echovirus Antibodies, S

Specimen Type


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  7 days

Reference Values

Reference Range:   <1:8


<1:8         Antibody not detected

≥ 1:8 Antibody Detected



<1:8         Antibody not detected

≥ 1:8 Antibody Detected



Single titers ≥ 1:32 are indicative of recent infection.  Titers of 1:8 or 1:16 may be indicative of either past or recent infection, since CF antibody levels persist for only a few months.  A four-fold or greater increase in titer between acute and convalescent specimens confirms the diagnosis.  There is considerable crossreactivity among enteroviruses; however, the highest titer is usually associated with the infecting serotype.


Day(s) and Time(s) Performed

Tuesday through Saturday

Performing Laboratory

Quest Diagnostics Infectious Disease

Test Classification

This test was developed and its performance characteristics have been determined by Focus Diagnostics. Performance characteristics refer to the analytical performance of the test.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
ECHO Echovirus Antibodies, S 43120-5


Result ID Test Result Name Result LOINC Value
Z0573 Echovirus 4 Ab 5143-3
Z0312 Echovirus 7 Ab 6922-9
Z0318 Echovirus 9 Ab 5147-4
Z0319 Echovirus 11 Ab 6708-2
Z0320 Echovirus 30 Ab 6392-5