Alfalfa
Bloodspot
Alfalfa IgG reactivity marker
1019 IgG Food Antibodies - Bloodspot
What is the 1019 IgG Food Antibodies – Bloodspot test?
The 1019 IgG Food Antibodies – Bloodspot panel by Genova Diagnostics is a dried blood spot test designed to measure IgG antibody responses to a wide range of commonly consumed foods. It helps identify delayed immune reactions to foods, sometimes referred to as IgG-mediated food sensitivities.
Unlike immediate food allergies (IgE-mediated), which can trigger rapid symptoms like hives or anaphylaxis, IgG food reactions may develop hours to days after eating. This delay can make it difficult to connect symptoms to specific foods without testing.
The bloodspot collection method allows for convenient at-home sampling using a finger-prick blood sample.
What does this panel measure?
This panel evaluates IgG antibodies to dozens of foods across key categories, which may include:
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Dairy products
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Grains and gluten-containing foods
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Eggs
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Nuts and seeds
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Fish and shellfish
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Fruits and vegetables
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Legumes and soy
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Common additives or yeast
Elevated IgG levels to specific foods may indicate increased immune exposure or reactivity to those foods.
Why is this test ordered?
Clinicians may recommend the 1019 IgG Food Antibodies panel when patients experience chronic or unexplained symptoms that could be related to food sensitivities, such as:
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Bloating, gas, or digestive discomfort
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Headaches or migraines
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Skin issues (eczema, acne, rashes)
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Fatigue or brain fog
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Joint pain
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Sinus congestion
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IBS-like symptoms
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Inflammatory conditions
This test is often used as part of a broader functional or integrative medicine evaluation.
How to interpret results
Elevated IgG antibodies
Higher IgG levels to certain foods may suggest frequent exposure or sensitivity. Some practitioners use these results to guide temporary elimination diets followed by structured reintroduction.
Low or normal IgG antibodies
Low levels typically suggest less immune reactivity to those foods.
It is important to note that IgG antibodies can also reflect tolerance and regular exposure, not necessarily pathology. Results should always be interpreted alongside:
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Symptoms
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Diet history
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Clinical context
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Other lab markers (gut health, inflammation, etc.)
How results are used clinically
Results from the 1019 IgG Food Antibodies – Bloodspot panel are commonly used to:
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Personalize elimination diets
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Reduce inflammatory food triggers
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Support gut health protocols
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Guide reintroduction planning
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Monitor response over time
Many practitioners pair this test with stool testing, microbiome analysis, or inflammation markers for a more complete picture.
Bloodspot collection: what to expect
The dried blood spot method involves:
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Finger-prick blood collection at home
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Drops placed on a collection card
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Card mailed to the lab for analysis
This approach is convenient and requires no in-office blood draw.
Limitations to understand
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IgG testing does not diagnose food allergies
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Results do not replace clinical evaluation
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Not all elevated IgG results indicate a problem
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Best used as a guide, not a definitive diagnosis
A qualified practitioner should interpret results within the broader clinical picture.
Who might benefit from this test?
This panel may be useful for individuals with:
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Chronic digestive symptoms
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Suspected food sensitivities
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Autoimmune or inflammatory conditions
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Skin issues linked to diet
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Migraines or fatigue of unclear origin
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Ongoing symptoms despite dietary changes
Biomarkers in this category
86 biomarkers · optimal ranges shown
Almond
Bloodspot
Apple
Bloodspot
Apple IgG reactivity marker
Apricot
Bloodspot
Asparagus
Bloodspot
Avocado
Bloodspot
Beef
Bloodspot
Beets
Bloodspot
Beets IgG reactivity marker
Blueberry IgG reactivity marker
Broccoli
Bloodspot
Buckwheat IgG reactivity marker
Cabbage
Bloodspot
Cabbage IgG reactivity marker
Cane sugar
Bloodspot
Cane sugar IgG marker
Carrot
Bloodspot
Carrot IgG reactivity marker
Casein
Bloodspot
Casein IgG reactivity marker
Celery
Bloodspot
Celery IgG reactivity marker
Cheddar IgG reactivity marker
Chicken
Bloodspot
Chicken IgG reactivity marker
Chocolate
Bloodspot
Chocolate IgG reactivity marker
Clam
Bloodspot
Elevated IgG antibodies to clam may reflect immune reactivity to shellfish. Learn what a positive clam marker can mean for digestion, inflammation, and diet planning.
Cod
Bloodspot
Cod IgG reactivity marker
Coffee
Bloodspot
Coffee IgG reactivity marker
Corn
Bloodspot
Corn gluten
Bloodspot
Corn gluten IgG marker
Cottage cheese
Bloodspot
Cow’s milk IgG marker
Crab
Bloodspot
Crab IgG reactivity marker
Cranberry
Bloodspot
Cranberry IgG reactivity marker
Cucumber
Bloodspot
Egg white IgG reactivity marker
Egg Yolk
Bloodspot
Egg yolk IgG reactivity marker
Garlic
Bloodspot
Garlic IgG reactivity marker
Gluten IgG reactivity marker
Goat's milk
Bloodspot
Goat’s milk IgG marker
Grape IgG reactivity marker
Grapefruit
Bloodspot
Grapefruit IgG reactivity marker
Green Pepper
Bloodspot
Kidney bean
Bloodspot
Kidney bean IgG reactivity marker
Lactalbumin
Bloodspot
Lactalbumin IgG marker
Lamb
Bloodspot
Lamb IgG reactivity marker
Lemon
Bloodspot
Lentil IgG reactivity marker
Lettuce
Bloodspot
Lima bean
Bloodspot
Lima bean IgG reactivity marker
Lobster
Bloodspot
Lobster IgG reactivity marker
Mushroom
Bloodspot
Mushroom IgG reactivity marker
Oat
Bloodspot
Oat IgG reactivity marker
Olive
Bloodspot
Olive IgG reactivity marker
Onion
Bloodspot
Onion IgG reactivity marker
Orange
Bloodspot
Orange IgG reactivity marker
Oyster IgG reactivity marker
Papaya IgG reactivity marker
Pea
Bloodspot
Peach
Bloodspot
Peanut
Bloodspot
Peanut IgG reactivity marker
Pear
Bloodspot
Pecan IgG reactivity marker
Pineapple
Bloodspot
Pineapple IgG reactivity marker
Pinto bean
Bloodspot
Pinto bean IgG reactivity marker
Plum
Bloodspot
Plum IgG reactivity marker
Pork
Bloodspot
Potato, sweet
Bloodspot
Sweet potato IgG marker
White potato IgG marker
Raspberry
Bloodspot
Red snapper
Bloodspot
Rice IgG reactivity marker
Rye
Bloodspot
Rye IgG reactivity marker
Salmon
Bloodspot
Salmon IgG reactivity marker
Sardine
Bloodspot
Sesame
Bloodspot
Sesame IgG reactivity marker
Shrimp
Bloodspot
Sole
Bloodspot
Soy
Bloodspot
Spinach IgG reactivity marker
Strawberry
Bloodspot
Strawberry IgG reactivity marker
String bean
Bloodspot
String bean IgG reactivity marker
Sunflower seed IgG marker
Tomato
Bloodspot
Tomato IgG reactivity marker
Trout
Bloodspot
Trout IgG reactivity marker
Tuna
Bloodspot
Turkey
Bloodspot
Turkey IgG reactivity marker
Walnut
Bloodspot
Wheat IgG reactivity marker
Yeast
Bloodspot
Yeast IgG reactivity marker
Yogurt IgG reactivity marker
Zucchini
Bloodspot
Zucchini IgG reactivity marker