Total Isocyanate Exposure Level (Serum)

This test is done to find out whether you have been exposed to a harmful substance and to measure how much of it may be present in your body, so your doctor can decide on the right follow-up care and treatment plan.

Your healthcare provider may order this test if you work with or are exposed to isocyanates, have symptoms like skin rashes, breathing difficulties, or unexplained allergic reactions. It can also help monitor long-term exposure risks.

Before the test, tell your doctor about any medications, vitamins, or supplements you take, as well as any recent illnesses or possible contact with harmful substances at home or at work. In most cases you can eat and drink normally beforehand, and your care team will explain exactly where to go and what will happen during your visit.

No special preparation is needed. You’ll provide a blood sample, typically drawn from a vein in your arm. The process takes a few minutes, and you can resume normal activities afterward.

Your results show the level of the substance found in your blood. A normal level usually means no significant exposure, while a higher level may suggest recent or ongoing exposure. Your doctor will interpret your numbers along with your symptoms and medical history, and may order repeat testing to confirm the findings before recommending any treatment.

Results help determine if you’ve been exposed to harmful levels of isocyanates. High levels may indicate recent or ongoing exposure, which could affect your health over time.

Exposure often happens through contact with contaminated soil, dust, old paint, or tainted drinking water, as well as through certain jobs such as construction or manufacturing, hobbies like welding or pottery, and some foods, imported products, or traditional remedies that may contain harmful substances.

Exposure often occurs in industries like manufacturing, construction, or automotive repair where adhesives, paints, or sealants containing isocyanates are used. Occupational settings are the most common sources.