A 60-year-old man has presented to a clinic and is requesting screening for tumor markers after reading about them in a magazine. What can the clinician most accurately tell the man about the clinical use of tumor markers?

Answer

When cells are populated with cancers cells; they produced certain substances in response to the cancerous growths. These substances are called tumor markers.However these (substances) can also produced by  normal cells in a non- cancerous conditions in response to  other diseases conditions.

The clinician should conclude from above analysis that; ''Therefore, they are not enough  for diagnosis of  cancer  growth to give a positive  or negative confirmation  of tumor. The man should be told that; they are not effective screening tools for cancer''.

They are measured from levels in the blood or urine.

Explanation:

its bassicly asking u   to answer it in your own words does that

answer

ben’s food poisoning was caused by cross-contamination

explanation

cross-contamination in food occurs when harmful bacteria is transferred to food from other foods, utensils or cutting boards. it happens often when handling raw meat , sea foods and poultry. in this case, because ben did not wash hands before and after handing the poultry, chances that bacteria transfer   from the poultry to the vegetable are high.