Lead, Venous Whole Blood (LEDVEN)




Monday, Wednesday, Friday, by 09:00 AM

Results in 24 hours after setup, unless samples need to be repeated. Friday results available the following Monday, unless a repeat is necessary.



Venous Whole Blood 


  Collection Device:

EDTA (Lavendar) tube

K2EDTA (Blue) Tube



Must meet fill requirements


Ambient or 2-8 ºC



Clotted or Frozen

  Specimen Stability:

Ambient: 1 week

2-8 ºC: 6 months

  Reference Interval:
<=3.5 µg/dL for children and adults
Notification rage >25.0µg/dL  
Critical range >45.0µg/dL  


  Reportable Disease:

All results greater than 10ug/dL from Nebraska are reported to the Nebraska Department of Health through the douglas County Health Department. 


Interpretive Data: 

CDC Blood Lead Reference Value: 3.5 µg/dL

  • CDC classification in children (<=15 years of age):= 10µg/dL or as indicated by local health dept. 20-44µg/dL: Same as above. Complete history and physical exam, assess for signs and symptoms. 45µg/dL or higher: Same as above. Medical intervention including physical and neurological exam. Consider chelation therapy. Contact state or local health dept. 
  • CDC Classification in Adults (>=16 years of age):
    • <3.5 ug/dL: No action needed. Monitor BLL if ongoing exposure
    • 3.5-9 ug/dL: Discuss health risks. Minimize exposure. Reduce lead exposure for women who are or may become pregnant
    • 10-19 ug/dL: Decrease exposure. Consider removal from lead exposure for certain medical conditions or BLL >10 for extended period. Increase monitoring and repeat BLL in 3 months.
    • 20-29 ug/dL: Remove from Lead exposure. Prompt medical evaluation.
    • 50-79 ug/dL: Remove from lead exposure. Prompt medical evaluation. Consider Chelation therapy with significant symptoms or signs of lead toxicity.
    • >80 ug/g/dL: remove from lead exposure. Urgent medical evaluation. Probably Chelation therapy. 
  • Source for children: "Recommended Actions Based on Blood Lead Level, CDC, 2021."
  • Source for adults: "Recommendations for Medical Management of Adult Lead Exposure, environmental Health Perspectives, 2007"
  Revised: 5/9/2023