Lead concentration in blood is considered alarming if it is

Options

A. `20 mu g//100 mL`
B. `30 mu g//100 mL`
C. `4-6 mu g//10 mL`
D. `10 mu g//100 mL`

Answer

B

Explanation

The concentration of lead in blood averages about `25 mu g//100 mL`. Increase to `70 mu g//100 mL` is generally associated with clinical symtoms. Hence, a level of `30 mu g//100 mL` is considered alarming. The Chief sources of Pb to water are the effluents of lead and lead processing industries.