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Immunoglobulin G
MessageChemistry
Test Code
LAB71
CPT Codes
82784
Preferred Specimen
Gold top (serum separator tube)
Minimum Volume
Whole blood: 600 uL (TWO full red-top microtainers or one full light green-top microtainer).
Serum/plasma: 300 uL
Serum/plasma: 300 uL
Other Acceptable Specimens
Red Top and light green top (lithium heparin plasma) acceptable
Instructions
Liquid EDTA plasma specimens collected in partially filled sample tubes may result in negative prediction biases.
Centrifuge specimens and remove the serum or plasma from the cellular material within two hours of collection
Centrifuge specimens and remove the serum or plasma from the cellular material within two hours of collection
Transport Temperature
Refrigerated
Specimen Stability
Room temperature 18–28 °C (64–82 °F) ≤ 1 day
Refrigerated 2–8 °C (36–46 °F) ≤ 7 days
Frozen ≤-18 °C (≤0 °F) ≤ 4 weeks
Refrigerated 2–8 °C (36–46 °F) ≤ 7 days
Frozen ≤-18 °C (≤0 °F) ≤ 4 weeks
Methodology
Blanked Endpoint
FDA Status
Approved
Setup Schedule
Everyday
Report Available
Same day
Limitations
An abnormally elevated level of a monoclonal immunoglobulin, as in cases of multiple myeloma,
amyloidosis, or other lymphoproliferative diseases, may interfere with the quantification of IgG.
amyloidosis, or other lymphoproliferative diseases, may interfere with the quantification of IgG.
Reference Range
700 - 1600 mg/dL
Performing Laboratory
Hoag Newport
