Lead blood test - measure lead concentrations
The P-Lead test analyzes lead concentration in the blood and is used to assess lead exposure. It is especially important for detecting elevated lead levels that can lead to serious health issues with prolonged exposure. Lead occurs naturally but can also come from contaminated drinking water, older lead-glazed ceramics, and certain work environments. High lead levels are linked to effects on the nervous system, kidneys, and blood formation, particularly in children, where development can be affected.
Applications of the lead test
The P-Lead test is used in various clinical contexts where assessing lead exposure is essential. Common situations where the test is recommended include:
- Suspected lead poisoning: To assess exposure from workplace environments, drinking water, or specific foods.
- Investigation of occupational exposure: Individuals in metal processing or other industries may be exposed to higher lead levels.
- Monitoring chronic lead exposure: Prolonged exposure to lead can cause damage to the nervous system and other organs.
When is a lead test recommended?
Analysis of P-Lead is recommended if there is suspected exposure from contaminated drinking water, food, workplace environments, or other sources. The test is especially relevant for individuals in high-risk occupations and those living in areas at risk. It is based on a venous blood sample and provides reliable results for detecting lead poisoning or elevated exposure levels.
Reference Values for Lead (B-Pb)
Lead levels are measured in whole blood. For individuals with no known occupational exposure, a value below 0.2 µmol/L has previously often been used as a reference value. Reference values may vary between laboratories and patient populations; therefore, the current reference range is provided in the laboratory report.
Previously, levels of 1.5 µmol/L for occupationally exposed adults and 0.5 µmol/L for women under the age of 50 were also specified as thresholds requiring follow-up. Effective April 9, 2026, new regulations from the Swedish Work Environment Authority introduce updated biological limit values. In connection with this change, laboratories have transitioned to reporting whole-blood lead levels in µg/100 mL instead of µmol/L.
For individuals who are occupationally exposed to lead, results should be assessed in accordance with the current regulations issued by the Swedish Work Environment Authority. Elevated blood lead levels should be followed up to identify potential sources of exposure and determine whether further evaluation is needed. The laboratory report provides the reference range and unit applicable at the time of testing.
Interpretation of p-lead test results
A normal lead level is below 0.2 µmol/L. Elevated levels may indicate exposure from sources such as contaminated water, certain foods, or specific occupations. When levels are elevated, sources of exposure should be investigated, and measures taken to reduce lead exposure.
Turnaround time
Analyses are performed at the laboratory once or twice a month. Results for P-Lead are expected to be delivered within 10–15 working days after the sample arrives at the laboratory.
