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HelpTest Code LAB73 Immunoglobulin A Level
Clinical System Name
Immunoglobulin A Level
Synonyms
IgA
Sample Requirements
Specimen: Whole blood
Container(s): Gold SST, Gold Microtainer, Red, Lavender/EDTA, 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 0.5 mL 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 -20 C | 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 | 1 - 17 | 1 - 16 |
| 1 month - 6 months | 6 - 47 | 1 - 49 |
| 6 months - 12 months | 8 - 89 | 13 - 75 |
| 1 - 3 years | 15 - 142 | 21 - 117 |
| 4 - 6 years | 50 - 192 | 39 - 170 |
| 7 - 9 years | 64 - 209 | 34 - 181 |
| 10 - 12 years | 51 - 223 | 61 - 198 |
| 13 - 15 years | 35 - 252 | 68 - 246 |
| 16 - 18 years | 74 - 261 | 75 - 267 |
| >18 years | 70 - 400 | 70 - 400 |