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HelpTest Code LAB72 Immunoglobulin M Level
Clinical System Name
Immunoglobulin M Level
Synonyms
IgM
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST, Gold Microtainer, Red, EDTA/Lavender, Lt. Green/Lithium Heparin, Dark Green/Sodium Heparin
Preferred Vol: 2.0 mL
Minimum Vol: 1.0 mL
Note: Can share volume with IgA, IgG, and IgM and any other testing performed on the ProSpec
Processing Instructions
Reject due to:
Spin: Y
Aliquot: Y
Temp: 2-8 C
Storage location: CPA refrigerator, FrigA rack.
Off-site collection: Spin and aliquot 0.5mL serum/plasma in plastic tube. Send refrigerated.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| gel separator with serum/plasma | Refrigerated | 48 h |
| separated serum/plasma | Room temp | 2 h |
| Refrigerated | 8 d | |
| Frozen | 3 m |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M, W, F, day shift | 1-3 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Location: Chem East
Phone Number: (206) 987-2617
CPT Codes
82784
Methodology
Method: Nephelometry by Siemens ProSpec
Analytical Volume: 0.4 mL serum/plasma (absolute minimum is 0.250 mL serum/plasma)
Limitations: Test is affected by repeated freeze-thaw cycles. Not affected by hemolysis or icterus.
Reference Range
| Age | Male (mg/dL) | Female (mg/dL) |
|---|---|---|
| 1 - 30 days | 8 - 78 | 13 - 70 |
| 1 month - 6 months | 18 - 98 | 6 - 142 |
| 6 months - 1 year | 27 - 132 | 3 - 145 |
| 1 - 3 years | 42 - 161 | 47 - 200 |
| 4 - 6 years | 43 - 166 | 54 - 200 |
| 7 - 9 years | 33 - 155 | 42 - 181 |
| 10 - 12 years | 39 - 167 | 54 - 228 |
| 13 - 15 years | 38 - 200 | 46 - 242 |
| 16 - 18 years | 40 - 195 | 58 - 241 |
| >18 years | 40 - 230 | 40 - 230 |