Re: CSI demystified! - CSI

>Is it still possible to test for DNA on a cotton swab if it had been sprayed
with luminal?

A: This isn't really my field, so I'm not sure. It depends on whether the
solvent for the luminol "denatures" or decomposes the DNA. I seem to recall
that when luminol is used on a surface (a painted wall, say) that had blood
smear on it, DNA can still be recovered from the area where the luminol
indicates blood was present. But I may be thinking of visually-apparent
(*without* luminol) blood spatters. DNA would quite likely be recoverable
from those, if they're not too old.

有可能在用過光敏靈的棉花棒上取得DNA樣本嗎？

這不是我的領域，所以我不是很確定。這取決於光敏靈溶劑有沒有使得DNA受到損壞。
我似乎有印象，當光敏靈是用在一個光滑的表面時，如一面漆過的牆上的血跡，我們
仍可以取得DNA樣本。不過這可能是指不用使用光敏靈就能看到的血跡。如果血跡沒有
被曝露很久的話，取得它們的DNA並不是太大的問題。

--