Alpha-1-antitrypsin (blood)
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About This Test
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Department: Biochemistry Requirement: Gel/clotted (yellow/red top) Add-on requests are accepted
Turnaround Time: 72 hours |
Background:
Investigation of early emphysema; or investigation of prolonged jaundice in infants/young children
All samples will be analysed for AAT levels in the first instance. If these are low, then genotyping analysis should be requested.
AAT is a positive acute phase protein and may be high in infection or inflammation.
Reference ranges:
| Age ranges | Reference range (g/L) |
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| < 20 days | 0.48 - 0.625 |
| < 1 year | 0.72 - 1.68 |
| < 2 years | 0.912 - 1.825 |
| < 4 years | 0.79 - 1.78 |
| < 7 years | 0.72 - 1.87 |
| < 11 years | 0.82 - 1.825 |
| < 15 years | 0.864 - 1.68 |
| Adults | 0.864 - 1.92 |
Results outside the reference range do not necessarily indicate disease. Similarly, results within the reference range do not preclude abnormality. Please contact the Duty Biochemist for discussion of individual patient results.
Other Comments:
For more information, please see the following: AAT - Lab Tests Online