though a weak result was obtained for the sheetrock-V tested with
TMB. The testing of the surfaces which had been washed with
bleach gave strong positive results with PT on 5/7 surfaces; the
sheetrock-V was a weak positive and the sheetrock-H was nega-
tive. For those same surfaces tested with TMB, 3/7 gave strong pos-
itive results; one weak positive (tile) and three negative results (car-
pet, sheetrock-V, and sheetrock-H). The results for the PT test after
the luminol treatment, both while the surface was still wet from the
luminol treatment and after being allowed to dry, were similar to
the results obtained before the luminol treatment. The only surface
which gave different results after luminol treatment was the tile
which was washed with bleach. Prior to luminol testing, the PT test
on tile gave a weak positive result, while after luminol treatment
the PT results were negative. Four of the surfaces which gave pos-
itive results with the TMB test before luminol treatment gave neg-
ative results after treatment (both wet and dry), and one of the sur-
faces which gave positive results before luminol treatment and after
luminol treatment (wet) gave negative results once the surface had
dried.