When getting a drug test done at the hospital it also means marijuana. A hospital drug test tests for everything.
Causes: eye injury, lack of vitamin A, infection, congenital Prevention: personal hygiene, eye care, supplement of Vit A, screeing of eye disease
By having a medical doctor notify the DMV that you are considered to be medically unfit to continue to operate a vehicle -or- fail an aptitude or screeing test at you rlocal DMV office at the time of license renewal
Two non-cultured alternatives commonly used for screeing urinary tract infection are: (a) dipstick tests and (b) urine microscopy
Some antibiotics may cause false positives for opiates: "A total of 13 quinolone antibiotics were solubilized to represent expected urinary concentrations for testing via 5 different commercial immonoassays (levofloxacin [levaquin], ofloxacin [floxin], gatifloxacin, enoxacin, moxifloxacin, sparfloxacin, pefloxacin, trovafloxacin, lomefloxacin, ciprofloxacin [cipro], cinafloxacin, norfloxacin, and nalidixic acid. The assays included EMIT II reagents, AxSYM flourescence polarization immunoassay, CEDIA, Roche Abuscreen OnLine reagents, and Beckman opiate reagents. In vitro testing against a positive concentration of morphine (300 ng/mL) revealed that 9 of the quinolones (levofloxacin, ofloxacin, perfloxacin, enoxacin, gatifloxacin, lomefloxacin, moxifloxacin, ciprofloxacin, and norfloxacin) caused false positives in at least one of the assay systems. The quinolones that cross reacted most often included levofloxacin (4/5), ofloxacin (4/5), perfloxacin (3/5) and enoxacin (2/5)." Baden LR Horowitz B, Jacoby H Eliopoulos GM Quinolones and false positive urine screeing for opiates by immunoassay technology JAMA 2001; 286:3115-3119.
The paddle wheeled river boats of Twain's day were wood fired steam boats, The wood was cut and piled near landings by local contractors. The boats were interesting sas the engineers on board were always screeing down the safeties on the boilers (no fire tubed boilers back then) and as a consequence the boilers, engineers and their boas would often explode. Read "Captain Kidd's Statement" at Link