Allergy and autoimmune disease sit on opposite ends of the immune system’s spectrum; one is the body overreacting to something harmless, the other is the body attacking itself. In the lab, both are often answered by the same two tools: ImmunoCAP™ and EliA™, running on Thermo Fisher’s Phadia™ Laboratory Systems rather than as separate testing lines.
For laboratories in Greece evaluating how to consolidate allergy and autoimmune testing, understanding what the Phadia platform actually does and which instrument fits which lab is the starting point.
Why specific IgE testing replaced the skin prick test as the default allergy test
For decades, allergy diagnosis leaned on two tools: the skin prick test and total IgE blood testing. Both are still used, but both share the same limitation: neither can tell a clinician which molecule within an allergen is driving the reaction. A patient might test positive to “peanut” without anyone knowing whether they’re reacting to a storage protein that cross-reacts harmlessly with birch pollen, or to a heat-stable protein associated with severe, systemic reactions.
ImmunoCAP addresses this with component-resolved diagnostics (CRD): rather than testing against a whole allergen extract, it measures specific IgE (sIgE) against individual allergenic proteins. That distinction matters clinically because it’s the difference between a lab result that says “possible peanut allergy” and one that can help separate true sensitization from cross-reactivity, reducing the unnecessary dietary restrictions and food avoidance that whole-allergen testing can trigger.
ImmunoCAP’s test menu reflects that breadth: environmental allergens, food allergens, and occupational allergens are all covered on the same platform, positioning it as a single testing solution rather than a patchwork of assays.
EliA: the same logic, applied to autoimmune disease
EliA follows the same principle on the autoimmune side. Autoimmune diseases are notorious for overlapping, nonspecific symptoms: joint pain, fatigue, and rashes can point to rheumatoid arthritis, lupus, celiac disease, or several thyroid conditions, and getting the differential diagnosis right often depends on precise autoantibody results rather than symptoms alone.
The EliA portfolio now covers more than 50 clinically relevant tests across nine disease areas: rheumatoid arthritis, connective tissue diseases, celiac disease, thyroid disease, vasculitis and Goodpasture syndrome, antiphospholipid syndrome, pernicious anemia, inflammatory bowel disease, and liver disease. A newer addition, the EliA CTD 13 Screen, consolidates connective tissue disease screening into a single panel rather than requiring a battery of individual tests. Because EliA runs on the same Phadia instruments as ImmunoCAP, a lab doesn’t need a separate autoimmunity analyzer sitting next to its allergy analyzer; the distinction between the two test types is in the assay, not the hardware.
What this means for a lab choosing between testing approaches
The practical case for consolidating allergy and autoimmune testing on Phadia isn’t just convenience. It’s that both testing categories benefit from the same qualities: standardized, quantitative, reproducible results that hold up across different operators and different days, scalability that doesn’t require re-validating a new method every time volume increases, and automation that reduces the manual steps where transcription and pipetting errors creep in. ImmunoCAP is widely regarded as the reference method for in vitro specific IgE testing, and EliA’s expanding test menu means autoimmune labs increasingly have a comparable option on the same instrument family, rather than having to maintain a separate manual or semi-automated method for autoantibody testing.
For laboratories evaluating a move from manual or single-purpose testing toward an integrated allergy and autoimmunity workflow, the right starting point is matching instrument throughput (Phadia 200, 250, 1000, 2500+ or 5000+) to actual sample volume and growth expectations, since all three run the same validated assay menu underneath.
At The Science Support, we supply Thermo Fisher’s Phadia™ Laboratory Systems, ImmunoCAP, and EliA solutions to clinical and diagnostic laboratories across Greece, along with installation, training, and ongoing technical support. Reach out to our team to discuss which Phadia configuration fits your lab’s testing volume.