Cadmium Blood Test (Cadmium, Whole Blood) Biomarker Testing
It measures recent cadmium exposure in your bloodstream and helps guide next steps; order through Vitals Vault with Quest labs and PocketMD support.
With Vitals Vault, you have access to a comprehensive range of biomarker tests.
A cadmium blood test measures how much cadmium is circulating in your blood right now. Cadmium is a toxic metal that can enter your body through certain jobs, cigarette smoke, contaminated dust, and some industrial materials.
This test is most useful for recent or ongoing exposure. If you are trying to understand longer-term body burden, your clinician may also consider cadmium in urine, because cadmium accumulates over time—especially in the kidneys.
Your number is not a diagnosis by itself. It is a data point that helps you and your clinician decide whether you need exposure reduction, repeat testing, or follow-up labs that look at kidney function and related risks.
Do I need a Cadmium Blood test?
You may want a cadmium blood test if you have a credible exposure source and you want an objective baseline. Common scenarios include working with batteries, metal plating, welding or soldering fumes, pigments, plastics manufacturing, recycling or e-waste, or living near industrial emissions where dust control is a concern.
Testing can also make sense if you smoke or recently quit smoking. Tobacco smoke is a well-known cadmium source, and a blood level can help you understand whether exposure is still ongoing.
Symptoms from cadmium exposure are often non-specific, and many people have no clear symptoms at all. If you do feel unwell after a known exposure (for example, heavy fume or dust exposure), testing can help document recent uptake and guide whether you need additional evaluation.
If your goal is to assess long-term accumulation rather than recent exposure, ask whether urine cadmium is a better fit for your question. Either way, lab testing supports clinician-directed care and does not replace medical evaluation when you feel sick or have a high-risk exposure.
Cadmium blood testing is typically performed in CLIA-certified laboratories; results should be interpreted with your exposure history, timing, and other labs rather than used as a standalone diagnosis.
Lab testing
Order a Cadmium Blood test and complete your draw at a Quest location.
Schedule online, results typically within about a week
Clear reporting and optional clinician context
HSA/FSA eligible where applicable
Get this test with Vitals Vault
Vitals Vault lets you order a cadmium blood test for yourself and complete the draw at a Quest location. This is helpful when you want a baseline, you are monitoring a workplace or environmental change, or you are rechecking after reducing exposure.
Once your result is back, you can use PocketMD to review what the number may mean for you, what follow-up questions to ask, and whether a repeat test timeline makes sense. Cadmium results are most actionable when you pair them with a clear exposure story and a plan to reduce sources.
If your cadmium is elevated, PocketMD can also help you map reasonable next steps to discuss with your clinician, such as kidney function testing, urine cadmium for longer-term exposure, and checking other metals when clinically appropriate.
- Order online and draw at a Quest location
- PocketMD helps you interpret results in context
- Easy re-testing to track exposure changes over time
Key benefits of Cadmium Blood testing
- Helps quantify recent or ongoing cadmium exposure instead of relying on symptoms alone.
- Creates a baseline you can compare against after a job change, remediation, or quitting smoking.
- Supports occupational health decisions when you work around cadmium-containing materials.
- Helps you decide whether follow-up testing (like urine cadmium or kidney labs) is warranted.
- Can clarify whether a suspected acute exposure likely led to measurable uptake.
- Improves conversations with your clinician by pairing a number with your exposure timeline.
- Makes it easier to trend results over time using consistent lab methods and repeat draws.
What is Cadmium Blood?
Cadmium is a heavy metal used in certain industrial processes and products. After exposure—most commonly through inhalation of smoke or dust, and less commonly through ingestion—cadmium can enter the bloodstream and circulate bound to proteins and red blood cells.
A cadmium blood test measures the concentration of cadmium in whole blood. In general, blood cadmium reflects more recent exposure (days to months), especially when exposure is ongoing. This is different from cadmium stored in tissues, because cadmium can accumulate over years, particularly in the kidneys.
Because cadmium can affect the kidneys and bones over time, an elevated blood level is often treated as a prompt to reduce exposure and consider additional evaluation. Your clinician may interpret your result alongside kidney markers (such as creatinine and urine protein) and your personal risk factors, including smoking history and workplace protections.
Blood vs. urine cadmium: which one answers your question?
Blood cadmium is usually better for recent or ongoing exposure. Urine cadmium is often used to reflect longer-term accumulation and kidney burden. If you are trying to answer “Is this exposure happening now?” blood is often the first step; if you are trying to answer “How much has built up over time?” urine may add important context.
What sources commonly raise cadmium?
Cigarette smoke is a major source because cadmium concentrates in tobacco leaves. Workplace sources include battery manufacturing and recycling, metal smelting, welding or soldering fumes, pigments, and certain types of dust exposure. Food can contribute small amounts, but meaningful elevations more often come from inhalation or occupational contact.
What do my Cadmium Blood results mean?
Low cadmium (or undetectable) levels
A low or undetectable result usually means you do not have significant recent cadmium exposure, or that any exposure is below the test’s detection limit. This is reassuring, especially if you were testing after a suspected exposure. If you have a long history of exposure, a low blood level does not fully rule out past accumulation, because cadmium can persist in tissues even when current blood levels are low.
In-range cadmium levels
An in-range result suggests your recent exposure is within what the lab considers typical for the general population. “In-range” does not mean cadmium is beneficial; it means your current level is not unusually high compared with reference groups. If you have ongoing exposure risk (for example, smoking or workplace contact), your clinician may still recommend prevention steps and periodic monitoring.
High cadmium levels
A high result suggests increased recent or ongoing exposure. The next step is usually to review timing and sources: smoking status, workplace tasks, protective equipment, ventilation, and any recent unusual dust or fume events. Depending on the level and your situation, your clinician may recommend repeat testing after exposure reduction and may add kidney-focused labs or urine cadmium to assess longer-term burden.
Factors that influence cadmium in blood
Smoking and secondhand smoke exposure can significantly raise blood cadmium. Recent high-intensity inhalation exposures (dust or fumes) can also raise levels, which is why timing matters when you test. Kidney function, nutritional status (including iron deficiency), and ongoing low-level exposure can influence how cadmium is absorbed and retained. Lab methods and specimen handling can affect very low results, so it helps to trend your testing through the same lab network when possible.
What’s included
- Cadmium, Blood
Frequently Asked Questions
What does a cadmium blood test measure?
It measures the amount of cadmium circulating in your whole blood at the time of testing. This is most informative for recent or ongoing exposure, especially from inhalation sources like smoke, dust, or fumes.
Do I need to fast for a cadmium blood test?
Fasting is not usually required for cadmium in blood. Follow the collection instructions provided with your order, and tell the lab and your clinician about recent exposures and smoking status because timing can affect interpretation.
What is the difference between cadmium in blood and cadmium in urine?
Blood cadmium generally reflects more recent exposure, while urine cadmium is often used to reflect longer-term accumulation and kidney burden. Your clinician may use one or both depending on whether you are evaluating a recent event or chronic exposure.
How long does cadmium stay in your body?
Cadmium can remain in the body for a long time because it accumulates in tissues, particularly the kidneys, over years. Blood levels can fall after exposure stops, but stored cadmium may persist, which is why urine testing and kidney monitoring may be considered in chronic exposure.
Can smoking raise cadmium levels?
Yes. Smoking is one of the most common causes of higher cadmium levels because cadmium concentrates in tobacco and is inhaled into the lungs. Quitting smoking and avoiding secondhand smoke can reduce ongoing exposure.
When should I retest cadmium in blood?
Retesting depends on your exposure source and how quickly you can reduce it. If you changed a workplace process, improved ventilation, or quit smoking, your clinician may suggest repeating the test after enough time has passed to reflect the change, often on the order of weeks to a few months.
What follow-up tests are commonly ordered with an elevated cadmium result?
Clinicians often consider kidney-focused labs (such as serum creatinine/eGFR and urine protein markers) and sometimes urine cadmium to assess longer-term burden. If there is concern for broader exposure, other metals may be checked based on your history rather than automatically.