Inter-laboratory variation in measurement of blood-lead levels.
D001800:Blood Specimen Collection; D002617:Chemical Industry; D019411:Clinical Laboratory Techniques / Q000592:standards; D006801:Humans; D007854:Lead / Q000097:blood*; D007855:Lead Poisoning / Q000175:diagnosis*; D008297:Male; D009784:Occupational Diseases / Q000175:diagnosis*; D009787:Occupational Medicine; D012959:Socioeconomic Factors; D013054:Spectrophotometry, Atomic
D007854:Lead