Parvovirus B19 IgG/IgM
Label Mnemonic: PARVO
Epic code: LAB3806
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Specimen Instructions:
Mark specimens plainly as "acute" or "convalescent". Parallel testing is preferred and convalescent samples must be received within 30 days from receipt of acute samples.
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 0.5 mL serum
Absolute Minimum: 0.3 mL serum
Rejection Criteria:
Contaminated, heat-inactivated, hemolyzed, hyperlipemic, or icteric serum.
Delivery Instructions:
Deliver to laboratory within 1 hour of collection.
Turn Around Time:
1-3 days upon receipt at reference laboratory
Reference Range:
Parvovirus B19 IgG Index
  IV = Index Value
0.89 IV or less:  Negative -  No significant level of detectable
                              Parvovirus B19 IgG antibody
0.90 - 1.10 IV:  Equivocal - Repeat testing in 10-14 days may be
                             helpful
1.11 IV or greater:  Positive -  IgG antibody to Parvovirus B19
                                 detected, which may indicate a
                                 current or past infection.

Parvovirus B19 IgM Index
   IV = Index Value
0.89 IV or less:  Negative -  No significant level of detectable
                              Parvovirus B19 IgM antibody
0.90 - 1.10 IV:  Equivocal - Repeat testing in 10-14 days may be
                             helpful
1.11 IV or greater:  Positive -  IgM antibody to Parvovirus B19
                                 detected, which may indicate a
                                 current or recent infection.
                                 However, low levels of IgM antibodies
                                 may occasionally persist for more
                                 than 12 months post-infection.
Methodology:
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
CPT Code:
86747(x2)
 
See also:
Parvovirus B19, PCR, Human, CSF, Amniotic Fluid, Synovial Fluid, Bone Marrow and Fresh Tissue (Snap Frozen)