Q. Lead concentration in blood is considered alarming if it is
A) $20\ \mu g/100\ mL$
B) $30\ \mu g/100\ mL$
C) $4 - 6\ \mu g/100\ mL$
D) $10\ \mu g/100\ mL$
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 symptoms. Hence, a level of $30\ \mu g/100\ mL$ is considered alarming.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.