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Test Code IGM Immunoglobulin M

Specimen Type

Blood

Container

Mint green top with gel separator

Preferred Volume

4 mL

UCMC Collection Instructions

 Once per admit.  If monitoring an identified paraprotein, then once per week.

Availability

Monday – Friday 7:00 a.m. – 3:00 p.m.

Turnaround Time

24 – 72 hrs

STAT Availability

Not Available

Test Methodology

Immunoturbidimetry

CPT Code

82784

Test Includes

quantitative determination of IgM in plasma

Reference Range

Age      Value (mg/dL)

> 14Y   50-320
12         70-150
11         66-155
10         80-150
9           55-160
8           68-175
7           60-175
6           55-210
5           40-180
4           52-200
3           46-190
2           72-160
7M        36-104
4M        25-120
1M        12-87
0           11-35

Critical Results

None

Test Limitations

It is known that the so-called paraproteins secreted in monoclonal gammopathies (monoclonal immunoglobulinemia) may differ from the respective immunoglobulins of polyclonal origin by amino acid composition and size. This may impair the binding to antibody and hence impair accurate quantitation.

Minimum Volume

2 mL

Fee Code

43057

Synonyms

IgM