Immunoglobulin M, Individual Quant
Order Code: IGM
Order Form: Laboratory Requisition
Specimen:
Plasma
Collection Medium:
Plasma Separator Tube
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood from light green top tube or ONE microtainer.
Rejection Criteria:
Specimens received in Sodium Citrate tubes
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Analytic Time:
1 hour (upon receipt in laboratory)
Reference Range:
 0 - 1 yrs 0 - 145 mg/dL 1 - 3 yrs 19 - 146 mg/dL 4 - 6 yrs 24 - 210 mg/dL 7 - 9 yrs 31 - 208 mg/dL 1O - 11 yrs 31 - 179 mg/dL 12 - 13 yrs 35 - 239 mg/dL 14 - 15 yrs 15 - 188 mg/dL 16 - 19 yrs 23 - 259 mg/dL > 19 yrs 40 - 230 mg/dL
Test Limitations:
Criterion: Recovery within plus or minus 10% of initial values. Icterus: No significant interference up to an I index of 60 (approximate conjugated and unconjugated bilirubin concentration: 60 mg/dL). Hemolysis: No significant interference up to an H index of 1000. (approximate hemoglobin concentration: 1000 mg/dL) Lipemia (Intralipid): No significant interference up to an L index of 3000. There is poor correlation between turbidity and triglycerides concentration. There is no cross-reaction between IgM and IgA or IgG under assay conditions. Sera with ill-defined characteristics should be subject to protein electrophoresis to identify a possible antigen excess (e.g. gammopathy). A high dose hook effect may occur at IgM concentrations of greater than 23,000 mg/d (230 g/l).
Methodology:
Immunoturbidimetric
Sample Processing:
Centrifuge at 3000 RPM for 10 minutes.
Aliquot plasma into labeled container and cap.
Sample Storage:
Refrigerate.
Transport Instructions:
Place requisition into outside pocket of bag.
Place specimen into zip-lock type bag, seal bag.
Transport in cooler with refrigerated coolant packs.
CPT Code:
82784