LabInformationLab tests, explained

IgA Lab Test in Missouri

IgA Lab Test is a laboratory test you can order directly. The IgA lab test measures the amount of immunoglobulin A (IgA), an antibody that helps protect mucous membranes in the respiratory and digestive tracts. It is ordered to evaluate immune function, screen for IgA deficiency, or monitor conditions like celiac disease and chronic infections. This page covers the iga lab test for people in Missouri, in Midwest, from what it measures to how to arrange a draw.

Sample type
blood
Category
Protein
Turnaround
1-3 business days
Price
$45
Referral
Not required

The IgA lab test measures the amount of immunoglobulin A (IgA), an antibody that helps protect mucous membranes in the respiratory and digestive tracts. It is ordered to evaluate immune function, screen for IgA deficiency, or monitor conditions like celiac disease and chronic infections.

What it measures

  • Total IgA — Overall level of IgA antibody in the blood.
  • IgA subclass 1 — One of two subtypes; helps pinpoint specific deficiencies.
  • IgA subclass 2 — The other subtype; often checked if total IgA is low.

Who it is for

A doctor may order this test if you have frequent infections, digestive problems, or symptoms suggesting an immune disorder. It is also used before certain celiac disease tests that rely on IgA.

Preparation

No fasting or special preparation is needed. Tell your doctor about any medications or recent illnesses, as they can affect results.

Results and what they mean

Results are reported as a number with a reference range, typically in milligrams per deciliter (mg/dL). Your clinician interprets the value along with your symptoms and other tests. This is general information, not medical advice; discuss your results with a healthcare professional.

Requesting the IgA Lab Test in Missouri

Order online, choose a certified collection site in Missouri, and review results through a secure portal. No referral is required, and orders are processed confidentially. Because the region is steady, a wide spread of cities and towns where trips are often grouped together — worth planning around when you book.

Frequently asked questions

What does a low IgA result mean?

It may indicate IgA deficiency, which can be inherited or linked to other conditions. Some people with low IgA have no symptoms, but your doctor will evaluate further.

Can I eat before the test?

Yes, no fasting is required. Eat and drink normally unless your doctor gives other instructions.

How long do results take?

Typically 1–3 business days, but this can vary by lab and location.

Is this test covered by insurance?

Coverage depends on your plan and medical necessity. Check with your insurance provider before testing.

IgA Lab Test by city in Missouri

All testing in Missouri →   Full IgA Lab Test guide →