ARUP's Laboratory Test Directory
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0050577: Immunoglobulin G Subclasses (1, 2, 3, 4)
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| Test Mnemonic: IGG SUB |
Methodology: Nephelometry
Performed: Mon-Sat
Reported: 1-3 days
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| Specimen Required: |
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Collect: One 4 mL SST or green (sodium or lithium heparin).
Transport: 2 mL serum or plasma at 2-8°C. (Min: 0.45 mL) Submit specimen in an ARUP Standard Transport Tube.
Pediatric Collection/Transport: 0.45 mL serum or plasma at 2-8°C.
Remarks: Separate serum or plasma from cells ASAP.
Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 6 months
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| Reference Interval: |
| Test Number
| Components
| Reference Interval
| | 0050571 | Immunoglobulin G Subclass 1
| Cord blood: 435-1084 mg/dL 5-6 years: 330-1065 mg/dL
0-2 months: 218-498 mg/dL 7-8 years: 225-1100 mg/dL
3-5 months: 143-394 mg/dL 9-10 years: 390-1235 mg/dL
6-8 months: 190-388 mg/dL 11-12 years: 380-1420 mg/dL
9-23 months: 288-880 mg/dL 13-14 years: 165-1440 mg/dL
2 years: 170-950 mg/dL 15 years and older: 240-1118 mg/dL
3-4 years: 290-1065 mg/dL
| | 0050572 | Immunoglobulin G Subclass 2
| Cord blood: 143-453 mg/dL 5-6 years: 57-345 mg/dL
0-2 months: 40-167 mg/dL 7-8 years: 42-375 mg/dL
3-5 months: 23-147 mg/dL 9-10 years: 61-430 mg/dL
6-8 months: 37-60 mg/dL 11-12 years: 73-455 mg/dL
9-23 months: 30-327 mg/dL 13-14 years: 71-460 mg/dL
2 years: 22-440 mg/dL 15 years and older: 124-549 mg/dL
3-4 years: 28-315 mg/dL
| | 0050573 | Immunoglobulin G Subclass 3
| Cord blood: 27-146 mg/dL 5-6 years: 8-126 mg/dL
0-2 months: 4-23 mg/dL 7-8 years: 9-107 mg/dL
3-5 months: 4-70 mg/dL 9-10 years: 10-98 mg/dL
6-8 months: 12-62 mg/dL 11-12 years: 16-194 mg/dL
9-23 months: 13-82 mg/dL 13-14 years: 12-178 mg/dL
2 years: 4-69 mg/dL 15 years and older: 21-134 mg/dL
3-4 years: 4-71 mg/dL
| | 0050576 | Immunoglobulin G Subclass 4
| Cord blood: 1-47 mg/dL 5-6 years: 2-116 mg/dL
0-2 months: 1-33 mg/dL 7-8 years: 0-138 mg/dL
3-5 months: 1-14 mg/dL 9-10 years: 1-95 mg/dL
6-8 months: 1-16 mg/dL 11-12 years: 1-153 mg/dL
9-23 months: 1-65 mg/dL 13-14 years: 2-143 mg/dL
2 years: 0-120 mg/dL 15 years and older: 7-89 mg/dL
3-4 years: 0-90 mg/dL
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| Interpretive Data: |
The total IgG (mg/dL) can be derived from the sum of the subclass IgG1, IgG2, IgG3, and IgG4 values. However, a confirmatory and more precise total IgG is available by the nephelometric method of quantitation for total IgG. Refer to test Immunoglobulin G, Serum (0050350).
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| CPT Code(s): |
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82787 x4 IgG Subclasses (1, 2, 3, 4)
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