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A Chronic Urticaria Index Blood Test is a lab blood test that helps check if your hives may be driven by your immune system. Many providers call it the CU Index or Chronic Urticaria Index, and some say Autoimmune Urticaria Index. You can book this lab test at participating labs through LabFinder and choose a place that fits your schedule.
A CU Index assay or Autoimmune Urticaria Index looks for signs that certain autoantibodies are activating cells that release histamine. In simple words, it helps your doctor see if long lasting hives might be autoimmune, not just allergy related. The result is one piece of the full picture your doctor uses to guide care.
Common reasons: hives most days for 6 weeks or longer, hives with swelling of lips or eyelids, hives that do not respond well to usual allergy medicines, or when your doctor wants to check for an autoimmune link. It can also be ordered if you have a history of thyroid or other autoimmune issues along with chronic hives.
Plan about 15 to 30 minutes at the site. You will check in, show your ID and the order, then sit while the staff cleans a small area on your arm. A tiny needle draws a small tube of blood in under a minute. A bandage is placed and you can usually leave right away while your sample goes to the lab.
Yes, this is a quick, routine blood draw and is considered very safe. You might feel a quick pinch, notice a small bruise, or feel a little lightheaded for a moment afterward, but those effects usually fade quickly. Be sure to tell the staff if you take blood thinners, have a bleeding disorder, or if you have fainted during blood draws before. They will take extra care to keep you comfortable.
Ask about fasting: Most people do not need to fast, but check with your doctor or the lab. Share medicines: Tell the team about all medicines and supplements you take, including antihistamines and steroids, since your doctor may want that noted with the result. Stay hydrated: Drinking water can make the draw easier. Timing note: If your doctor asked for testing during an active flare, try to schedule when symptoms are present. Bring records: Prior allergy or thyroid labs can help your doctor compare results.
Long lasting hives, swelling under the skin called angioedema, hives that keep coming back after stopping medicine, possible autoimmune links with thyroid disease, and symptoms that look like allergy but do not match skin or IgE tests. Results are read in context. Your doctor will review your number with your history and exam before planning next steps.
With LabFinder, you can compare locations, see time slots, and book online at participating labs. It is easy to search for a convenient location in your area or by city or ZIP. Cost and insurance basics: Coverage varies by plan and provider, so check with your insurer and the lab before you go. Results timing: Many labs send CU Index results within a few days, but timing can vary, so ask the lab when you schedule or check in.
Book on LabFinder: find a lab today on our lab finder and request a test doctor guided.
The information on this page and throughout the LabFinder website and mobile app is for general informational purposes only. It is not intended to serve as medical advice, diagnosis, or treatment. For personalized medical advice or specific health concerns, please consult your healthcare provider directly.
Booking a Chronic Urticaria Index Blood Test is easy using LabFinder. Just choose your location and enter your insurance information to find the closest Chronic Urticaria Index Blood Test near you.
To make a same-day appointment for a Chronic Urticaria Index Blood Test, just choose your location and your insurance information to find the closest Chronic Urticaria Index Blood Test location near you. If there's availability for a same-day appointment at a nearby lab location, then you will be able to book it easily through LabFinder.
LabFinder allows you to easily schedule a Chronic Urticaria Index Blood Test. You can search by location and insurance to easily book a Chronic Urticaria Index Blood Test near you.
LabFinder allows you to easily make an appointment for a Chronic Urticaria Index Blood Test online. To make an appointment for a Chronic Urticaria Index Blood Test online, just choose your location and your insurance information to find the closest Chronic Urticaria Index Blood Test near you.
Yes, you can get a Chronic Urticaria Index Blood Test without insurance. LabFinder allows you to search and select "Self-Pay" when booking a Chronic Urticaria Index Blood Test. While pricing for the test may not be immediately available, please check by calling the lab company directly for pricing.
