662 limits. For these four water-lead ranges both the median and the mean blood-lead fall progressively as the water-lead concentration falls. However, perhaps the most important aspect of this problem is the effect that high water lead has on the chances of a person having an unduly raised blood-lead (see table). 18% of people with first-flush water lead ≥ 1.44 µmol/l had blood-leads of 2 umol/1 (41 ug/dl) or more compared with 0.3% of those with water lead

Human placental lactogen in pregnancy.

662 limits. For these four water-lead ranges both the median and the mean blood-lead fall progressively as the water-lead concentration falls. However...
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