You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All of the following are true for occupational lead poisoning except - and explain in detail?
Lead poisoning occurs as inhalation and ingestion.Measuremwnts of lead in blood and urine provide quantitative indicators of exposure.Lead in urine of over 0.8mg/litre indicates lead exposure.A blood level of 70microgram/100 ml is associated with clinical symptoms.Basophilic stipling of RBC is a .sensitive parameter of the haematological response.(Ref.PARK'S textbook of preventive and social medicine 21st edition page no.748,749)