Precipitins, Farmers Lung (M.Faenii, T.Vulgars, L.Sacchari)
Code:
FARM
Sample Type:
2mL Serum (Gel 5mL Yellow tube)
Ref Ranges/Units:
mg/L
< 60 mg/L. Reference ranges established by Sheffield – Verified in house
Turnaround:
2 – 3 Weeks
Frequency of Analysis: Every 2 Weeks
Special Precautions/Comments:
Method: Fluorescence Enzyme Immunoassay (FEIA). Calibration WHO IRP67/86. EQA: UK NEQAS Scheme for Antibodies to Fungal and Related Antigens. IQC: In house preparation
Interferences: None known
Additional Information:
Indication: Farmers lung, Mushroom workers lung, Extrinsic allergic alveolitis
Background Information:
The moulds Micropolysporium Faenii, Thermoactinomyces Vulgaris and Laceyella Sacchari found in mouldy hay are the main sensitising agents responsible for the form of extrinsic allergic alveoliti(EAA) known as Farmer’s Lung. The presence of IgG precipitating antibodies in the serum of affected patients is regarded as an index of exposure to these organisms in response to the inhalation of mouldy hay dust [2]. These antibodies indicate a potential to develop EAA by immune complex production and deposition in the lung, but cell-mediated mechanisms are also important [1]. Titres are not useful for monitoring disease activity, but are evidence of continued exposure to antigen
References: Chapel H, Heaney M and Misbah S. Essentials of Clinical Immunology. 5th Edition. 2006. [Ref 1] Mcsharry C, et al. Takes your breath away – the immunology of allergy alveolitis. Clin Exp Imm. 2002. 128:3-9. [Ref 2]
Telephone Gateshead Lab: 0191.4456499 Option 4, Option 1