Allergy IgE testing “RAST Test” Allergy Blood Test

Allergy IgE testing Specific IgE RAST test Blood allergy test for adults and children in London.

Why do we use a blood allergy test and what is the difference with prick test and other types of allergy tests?

Allergy IgE testing ImmunoCap measures free specific IgE to an individual allergens that you and your allergy consultant suspect to be related to your symptoms. This allergy blood test can be done for more than 400 different allergens (developed by our partner – Phadia – division of Thermo Fisher scientific).  In our allergy centre you can get access to the cutting edge technology.

Our allergy consultants will help to interpret results for you and your children.

Please register as a new patient.

I want to have all available allergy tests done?
Very often we get request to do all possible tests and from technical side this can certainly be done.  Our consultants encourage to start from symptoms and do a limited number of tests for those allergens that actually can be responsible for symptoms and help with diagnosis.


Will a positive or negative test confirm or exclude allergy?

Unfortunately in many cases getting positive or negative result of an allergy test will not  answer the main question if the particular allergen is responsible for causing the symptoms or not.

We see many patients who have positive IgE tests to several allergens and don’t have any symptoms and on the opposite negative tests sometimes can be questioned by positive provocation tests when suspected allergen is applied on the skin or mucosa and actually cause symptoms. For example this is relevant in newly established condition called local allergic rhinitis, when people with negative allergy tests suffer from very bad hay fever (running nose, sneezing and itchy eyes).  This is why these tests need interpretation by experienced allergy consultants and are not recommended without a consultation with allergy specialist before of after testing.

In complex cases both skin prick testing IgE testing and component testing might be required

Appointment with allergy consultant can be booked via Electronic Appointment System

List of allergens for an allergy blood IgE test in London:


Grass pollens

Bahia grass g17
Barley g201
Bermuda grass g2
Brome grass g11
Canary grass g71
Cocksfoot g3
Common reed g7
Cultivated oat g14
Cultivated rye g12
Cultivated wheat g15
False oat-grass g204
Johnson grass g10
Maize, Corn g202
Meadow fescue g4
Meadow foxtail g16
Meadow grass, Kentucky blue g8
Redtop, Bentgrass g9
Rye-grass g5
Sweet vernal grass g1
Timothy grass g6
Velvet grass g13
Wild rye grass g70

Weed pollens

Alfalfa w45
Camomile w206
Careless weed w82
Cocklebur w13
Common pigweed w14
Common ragweed w1
Dandelion w8
Dog fennel w46
False ragweed w4
Firebush (Kochia) w17
Giant ragweed w3
Goldenrod w12
Goosefoot, Lamb’s quarters w10
Japanese Hop w22
Lupin w207
Marguerite, Ox-eye daisy w7
Mugwort w6
Nettle w20
Plantain (English), Ribwort w9
Rape w203
Rough marshelder w16
Saltwort (prickly), Russian thistle w11
Scale, Lenscale w15
Sheep sorrel w18
Sunflower w204
Wall pellitory w19
Wall pellitory w21
Western ragweed w2
Wormwood w5
Yellow dock w23

Tree Pollens

Acacia t19
American beech t5
Australian pine t73
Bald cypress t37
Bayberry t56
Box-elder t1
Cedar t212
Cedar elm t45
Chestnut t206
Common silver birch t3
Cottonwood t14
Cypress t222
Date t214
Elder t205
Elm t8
Eucalyptus, Gum-tree t18
European ash t25
Grey alder t2
Hackberry t44
Hazel t4
Horn beam t209
Horse chestnut t203
Italian/Mediterranean/Funeral cypress t23
Japanese cedar t17
Linden t208
Maple leaf sycamore, London plane t11
Melaleuca, Cajeput-tree t21
Mesquite t20
Mountain juniper t6
Mulberry t70
Oak t7
Oil Palm t223
Olive t9
Pecan, Hickory t22
Peppertree t217
Pine t213
Privet t210
Queen palm t72
Red cedar t57
Red mulberry t71
Scotch broom t55
Spruce t201
Sweet gum t211
Walnut t10
White ash t15
White hickory t41
White pine t16
Willow t12
Virginia live oak t218

House Dust

Greer Labs., Inc. h1
Hollister-Stier Labs. h2


Dermatophagoides pteronyssinus(House dust mite) d1
Dermatophagoides farinae (House dust mite) d2
Blomia tropicalis (House dust mite) d201
Dermatophagoides microceras (House dust mite) d3
Euroglyphus maynei (House dust mite)d74
Acarus siro (Storage mite) d70
Glycyphagus domesticus (Storage mite) d73
Lepidoglyphus destructor(Storage mite)d71
Tyrophagus putrescentiae (Storage mite) d72

Occupational Allergens

Cotton seed k83
Ethylene oxide k78
Ficus k81
Formaldehyde/Formalin k80
Isocyanate HDI (Hexamethylene diisocyanate) k77
Isocyanate MDI (Diphenylmethane diisocyanate) k76
Isocyanate TDI (Toluene diisocyanate) k75
Ispaghula k72
Latex k82
Phthalic anhydride k79
Sunflower seed k84


Cotton, crude fibers o1
Mealworm o211
MUXF3 CCD, Bromelain o214
Seminal fluid o70
Streptavidin o212

Epidermals and animal proteins

Budgerigar droppings e77
Budgerigar feathers e78
Canary bird droppings e200
Canary bird feathers e201
Cat dander e1
Camel dander e306
Chicken droppings e218
Chicken feathers e85
Chicken, serum proteins e219
Chinchilla epithelium e208
Cow dander e4
Dog dander e5
Duck feathers e86
Ferret epithelium e217
Finch feathers e214
Gerbil epithelium e209
Goat epithelium e80
Goose feathers e70
Guinea pig epithelium e6
Hamster epithelium e84
Horse dander e3
Mink epithelium e203
Mouse epithelium e71
Mouse epithelium, serum proteins and urine proteins e88
Mouse serum proteins e76
Mouse urine proteins e72
Parakeet serum e198
Parrot feathers e213
Pigeon droppings e7
Pigeon feathers e215
Rabbit epithelium e82
Rabbit, serum proteins e206
Rabbit, urine proteins e211
Rat epithelium e73
Rat epithelium, serum proteins and urine proteins e87
Rat serum proteins e75
Rat urine proteins e74
Sheep epithelium e81
Swine epithelium e83
Turkey feathers e89

Moulds, Yeast and Fungus

Acremonium kiliense m202
Alternaria alternata m6
Aspergillus flavus m228
Aspergillus fumigatus m3
Aspergillus niger m207
Aspergillus terreus m36
Aureobasidium pullulans m12
Botrytis cinerea m7
Candida albicans m5
Chaetomium globosum m208
Cladosporium herbarum m2
Curvularia lunata m16
Epicoccum purpurascens m14
Fusarium proliferatum (F. moniliforme) m9
Setomelanomma rostrata (Helminthosporium halodes) m8
Malassezia spp. m227
Mucor racemosus m4
Penicillium chrysogenum (P. notatum) m1
Penicillium glabrum m209
Phoma betae m13
Pityrosporum orbiculare (syn. Malassezia) m70
Rhizopus nigricans m11
Stemphylium herbarum (S. botryosum) m10
Tilletia tritici m201
Trichoderma viride m15
Trichophyton mentagrophytes var. interdigitale m211
Trichophyton rubrum m205
Ulocladium chartarum m204

Microorganisms bacterial products

Staphylococcal enterotoxin A m80
Staphylococcal enterotoxin B m81
Staphylococcal enterotoxin C m223
Staphylococcal enterotoxin TSST m226


Anisakis p4
Ascaris p1
Echinococcus p2


Berlin beetle i76
Blood worm i73
Cockroach, American i206
Cockroach, German i6
Fire ant i70
Horse fly i204
Mediterranean flour moth i203
Mosquito i71
Moth i8


Bumblebee i205
Common wasp (Yellow jacket) i3
European Paper Wasp i77
European hornet i75
Honey bee i1
Paper wasp i4
White-faced hornet i2
Yellow hornet i5

Drug Allergens

Amoxicilloyl c6
Ampicilloyl c5
Cefaclor c7
Chlorhexidine c8
Gelatin bovine c74
Insulin human c73
Penicilloyl G c1
Penicilloyl V c2
Protamine Rc207
Pholcodine c261
Morphine c260
Suxamethonium (succinylcholine) c202

Food Additives

Carob (E410) f296
Guar, guar gum (E412) f246
Gum arabic (E414) f297
Cochineal extract (Carmine red) (E120) f340

Foods – Miscellaneous

Cacao f93
Coffee f221
Mushroom (champignon) f212
Tea f222
Yeast f45

Foods – Fruit & Vegetables

Apple f49
Apricot f237
Banana f92
Blackberry f211
Blueberry f288
Cherry f242
Date f289
Fig f328
Grape f259
Grapefruit f209
Kiwi f84
Lemon f208
Lime f306
Mandarin (tangerine, clementine, satsumas) f302
Mango f91
Melon f87
Orange f33
Papaya f293
Passion fruit f294
Peach f95
Pear f94
Persimon (kaki fruit, sharon) f301
Pineapple f210
Plum f255
Raspberry f343
Strawberry f44
Watermelon f329VEGETABLES:
Asparagus f261
Aubergine, eggplant f262
Avocado f96
Bamboo shoot f51
Beetroot f319
Broccoli f260
Brussel sprouts f217
Cabbage f216
Carrot f31
Cauliflower f291
Celery f85
Cucumber f244
Fennel, fresh f276
Garlic f47
Lettuce f215
Olive (black, fresh) f342
Onion f48
Potato f35
Pumpkin f225
Spinach f214
Sweet potato f54
Tomato f25

Foods – Seeds, Legumes and Nuts

Almond f20
Brazil nut f18
Cashew nut f202
Hazel nut f17
Macadamia nut f345
Peanut f13
Pecan nut f201
Pine nut, pignoles f253
Pistachio f203
Walnut f256
Coconut f36
Sweet chestnut f299GRAINS:
Wheat f4
Spelt wheat f124
Gluten f79
Barley f6
Malt f90
Rye f5
Oat f7
Buckwheat f11
Common millet f55
Foxtail millet f56BEANS:
Lentil f235
Chick pea f309
Pea f12
Lima bean f182
Green bean f315
Red kidney bean f287
White bean f15
Soybean f14

Sesame seed f10
Linseed f333
Lupin seed f335
Maize, Corn f8
Poppy seed f224
Pumpkin seed f226
Quinoa f347
Rape seed f316
Rice f9
Sugar-beet seed f227

Foods – Milk

Cheese, cheddar type f81
Cheese, mold type f82
Cow’s whey f236
Goat milk f300
Mare’s milk f286
Milk f2
Milk, boiled f231
Sheep milk f325
Sheep whey f326

Foods – Fish, shellfish & molluscs

Anchovy f313
Cod White fish f3
Haddock f42
Hake f307
Herring f205
Mackerel f206
Pollock f413
Salmon f41
Sardine (Pilchard) f308
Sole f337
Trout f204
Tuna f40
Cat fish f369
Chub mackerel f50
Gulf flounder f147
Halibut f303
Jack mackerel, Scad f60
Megrim f311
Plaice f254
Red snapper f381
Sardine, Japanese Pilchard (Fish muscle) f61
Swordfish f312
Tilapia f414
Walleye pike f415
Whitefish (Inconnu) f384SHELLFISH & MOLLUSCS:
Abalone f346
Blue mussel f37
Clam f207
Crab f23
Crayfish f320
Langust (spiny lobster) f304
Lobster f80
Octopus f59
Oyster f290
Pacific squid f58
Scallop f338
Shrimp f24
Squid f258
Snail f314

Foods – Egg & fowl

Egg f245
Egg white f1
Egg yolk f75
Chicken f83
Turkey meat f284

Foods – Meat

Beef f27
Mutton f88
Pork f26
Rabbit f213

Food Spices

Anise f271
Basil f269
Bay leaf f278
Black pepper f280
Caraway f265
Chilipepper f279
Clove f268
Coriander f317
Dill f277
Fenugreek f305
Ginger f270
Green pepper (unripe seed) f263
Lovage f275
Mace f266
Marjoram f274
Mint f332
Mustard f89
Oregano f283
Paprika, Sweet pepper f218
Parsley f86
Tarragon f272
Thyme f273
Vanilla f234

Wheat Component Allergens

rTri a 19 Wheat Omega-5 Gliadin – f416
rTri a 14 Wheat LTP – f433
nGliadin (α,β, γ and ω gliadins) – f98

Hazelnut Component Allergens

rCor a 1 – f428
rCor a 8 – f425
nCor a 9 – f440
rCor a 14 – f439

Alpha-Gal component red meat mammalian meat allergy (MMA)

galactose-alpha-1,3-galactose (NGal-Alpha-1,3-Gal) (Alpha-Gal) Thyroglobulin, Bovine o215

If I live at a distance or have other reasons and can not attend allergy clinics in London?

Most of these tests can be requested online:

Up to 3 tests can be done remotely from a finger-prick. For more than three tests you can request several kits by completing separate orders of 3 allergens or the sample will be taken by a nurse in the laboratory (Central London)

All Allergy Tests

Allergy tests alphabetically (Remote and laboratory based)



Our London Laboratory can do allergy testing from a sample sent in the post. We provide all necessary for a blood sample collection by a healthcare professional locally and special transport container with prepaid envelope. Results will be sent to the patient and their GP (if they consent for this).

London Allergy and Immunology Centre together with our partners have developed a program for remote allergy testing using technology of simultaneous IgE detection to 112 different allergens in one test from a finger prick. This is similar method of IgE testsing to ImmunoCAP.  This type of Private Allergy Testing is done with Allergy Consultant’s interpretation of results and is available as an allergy UK wide test in any part of  England, Scotland, Wales and Northern Ireland.

Individual allergy tests to food can be requested remotely (up to 3 allergens can be done from one tube of blood collected from a finger prick), If you want to have more than three allergens done you will either need to attend the appointment or request two sample kits.  Individual tests for food allergens can be accessed from the website Food Allergy Test 

We have developed a history questionnaire that can be filled out on our website and then our consultants will determine if based on your symptoms, doing an allergy test can bring any new information helpful in diagnosis. If yes you will be sent a form and a collection kit (for adults only) or you can attend our laboratory in London with your child where a sample can be collected by a professional phlebotomist (trained to take samples at any age).  This test is called ISAC and it is also a specific IgE test but it only includes some allergens.

Allergens described below (the layout of the ISAC biochip is predetermined and it is not possible to add or remove anything (please see ISAC test information and list of allergens).

Allergy IgE testing ImmunoCAP is a very sensitive blood test for allergies. It measures the concentration of immunoglobulin E (IgE), which is an indicator of allergic sensitisation. ImmunoCAP is a laboratory test that can detect sensitisation to one allergen at a time (comparing to Immunocap ISAC (above) that tests for multiple allergens in one test). ImmunoCAP can test for hundreds of allergens, such as weeds, trees, pollen, mould, food, and animal dander—all with just one blood sample taken during a single appointment. The list of allergens that we can test is given below. Multiple tests can be done using the same sample. This test can be done for adults and children.

Results usually take under 2 weeks to be ready and are sent to the consultant who requested the test for you. You also can get a copy of the test result by e-mail. Our consultants will interpret results for you during the follow-up consultation (consultation is not included in the price). Results  can help your doctor determine your or your child’s individual allergy profile that can help to create a  treatment plan. This might include medications and tips to help you reduce exposure to your child’s specific allergic triggers, including rhinitis triggers, asthma triggers, and food allergy triggers. Accuracy: Among allergy blood tests, ImmunoCAP is widely considered to be the most accurate and precise—the best test, the gold standard.(1-4)

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