Milk Allergy Blood Test

What is Milk allergy?

Milk allergy is an immune system reaction to proteins found in cow's milk. It is caused by the immune system mistakenly identifying milk proteins, primarily casein and whey, as harmful invaders and producing IgG antibodies against them. The Food Specific IgG Allergy (Adult) Panel is the most important test for diagnosis because it measures specific IgG antibodies to casein and other milk proteins.

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What causes milk allergy?

Milk allergy is caused by the immune system mistakenly identifying proteins in cow's milk as dangerous substances. The two main proteins that trigger this reaction are casein (found in the solid part of milk) and whey (found in the liquid part). When you consume milk or milk products, your immune system produces antibodies called immunoglobulin G (IgG) or immunoglobulin E (IgE) to attack these proteins, leading to allergic symptoms that range from mild digestive discomfort to severe reactions like hives, vomiting, and potentially life-threatening anaphylaxis.

What is the best test for milk allergy?

The Food Specific IgG Allergy (Adult) Panel is the most important test for milk allergy because it measures specific IgG antibodies to casein (f78) and other milk proteins that trigger immune responses. This comprehensive blood test detects elevated antibody levels that indicate your body is mounting an immune reaction against milk proteins. When combined with your symptom history, this test provides valuable confirmation of milk allergy and helps healthcare providers develop an appropriate management plan. The test is particularly useful for identifying delayed allergic reactions that might not show up in traditional skin prick tests.

When should I get tested for milk allergy?

You should get tested if you experience digestive symptoms like bloating, diarrhea, or stomach cramps after consuming milk or dairy products, develop skin reactions such as hives or eczema following dairy consumption, notice respiratory symptoms like wheezing or nasal congestion after eating dairy, or have unexplained vomiting or nausea that seems connected to your diet. Testing is especially important if you have a family history of food allergies or if your symptoms are severe enough to interfere with daily life, as early diagnosis helps prevent serious allergic reactions and guides proper dietary management.

What are the symptoms of milk allergy?
Milk allergy symptoms can appear within minutes to hours after consuming milk or dairy products. Common symptoms include digestive issues like stomach cramps, bloating, diarrhea, nausea, and vomiting. You might also experience skin reactions such as hives, itchy rash, or eczema flare-ups. Respiratory symptoms include wheezing, coughing, runny nose, and difficulty breathing. In severe cases, milk allergy can trigger anaphylaxis, a life-threatening reaction that causes throat swelling, severe drop in blood pressure, rapid pulse, and loss of consciousness requiring immediate emergency treatment.
Who is at risk for milk allergy?
Children are at highest risk for milk allergy, particularly infants and young children under three years old, though many outgrow it by school age. You have increased risk if you have other allergies or allergic conditions like eczema, asthma, or hay fever. Family history plays a significant role—if your parents or siblings have food allergies or allergic conditions, your risk increases. People with other food allergies are also more likely to develop milk allergy. Adults can develop milk allergy too, though it is less common and tends to be more persistent than childhood milk allergy.
What happens if milk allergy is left untreated?
Untreated milk allergy can lead to repeated allergic reactions that become progressively more severe with continued exposure to milk proteins. You risk experiencing frequent digestive problems, chronic skin conditions, and respiratory issues that significantly impact your quality of life. Continued exposure increases the risk of developing anaphylaxis, a potentially fatal allergic reaction requiring emergency medical intervention. Children with undiagnosed milk allergy may experience nutritional deficiencies if milk is avoided without proper dietary substitutes, leading to inadequate calcium and vitamin D intake that affects bone development. Long-term inflammation from ongoing allergic reactions can also contribute to other health complications.
Can milk allergy be diagnosed with a blood test?
Yes, milk allergy can be diagnosed with blood tests that measure specific antibodies your immune system produces in response to milk proteins. The Food Specific IgG Allergy Panel measures IgG antibodies to casein and other milk proteins, with elevated levels indicating an immune response to milk. Blood tests offer several advantages over skin prick tests—they are not affected by antihistamine medications, do not risk triggering allergic reactions during testing, and can detect delayed immune responses. However, blood test results are most accurate when interpreted alongside your symptom history and may be combined with elimination diets for comprehensive diagnosis.
How is milk allergy treated?
Milk allergy is treated primarily through strict avoidance of milk and all dairy products, including milk, cheese, yogurt, butter, cream, and ice cream. You must carefully read food labels as milk proteins hide in many processed foods, baked goods, and even some medications. For accidental exposures causing mild symptoms, antihistamines help reduce reactions. If you are at risk for severe reactions, your doctor will prescribe an epinephrine auto-injector (EpiPen) that you must carry at all times for emergency treatment of anaphylaxis. Nutritional counseling helps ensure you get adequate calcium and vitamin D from non-dairy sources like fortified plant milks, leafy greens, and supplements.
How can I prevent milk allergy?
Milk allergy cannot be entirely prevented, especially if you have genetic predisposition, but some strategies may reduce risk in infants. Breastfeeding exclusively for the first four to six months provides protective antibodies and may reduce allergy risk. When introducing solid foods, current guidelines suggest introducing common allergens including dairy between four to six months rather than delaying, as early introduction may promote tolerance. If milk allergy is diagnosed, prevention focuses on avoiding accidental exposure by reading all food labels carefully, informing restaurants about your allergy, carrying emergency medication, and educating family members and caregivers about your condition and emergency response procedures.
What can I do at home for milk allergy?
At home, maintain a completely dairy-free kitchen by replacing milk with plant-based alternatives like almond milk, oat milk, soy milk, or coconut milk for cooking and drinking. Stock calcium-rich non-dairy foods including fortified plant milks, leafy greens, broccoli, almonds, and calcium-fortified orange juice to meet nutritional needs. Keep antihistamines and prescribed epinephrine auto-injectors easily accessible and ensure all family members know how to use them. Create a safe meal planning routine by cooking from scratch when possible, carefully reading all packaged food labels for hidden milk ingredients, and keeping a food diary to track any reactions. Consider working with a registered dietitian to ensure nutritionally balanced dairy-free meals.
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If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
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Food Specific IgG Allergy (Adult) Panel
Google reviews 505 reviews
$1,216 $948
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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