Drugs

[Linda_Merims@ne.3com.com]

When the drug tests are done, are they done so that the results
report:

  - the presence of a substance,  present  or  not present

or

  - the presence of a substance AND the parts per million (or billion)
    of that substance?

Linda B. Merims
lbm@ici.net
Linda_Merims@ne.3com.com (temporary)
Massachusetts, USA



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