Glyoxal/zinc fixative

Details Glyoxal/zinc fixative Glyoxal/zinc fixative

2008-05-06

2008-05-06

Pak, John (Department: 1616)

Drug, bio-affecting and body treating compositions

Inorganic active ingredient containing

Heavy metal or compound thereof

C424S075000, C514S698000, C514S705000, C514S724000, C435S002000, C435S040500, C436S018000

Reexamination Certificate

active

07368132

ABSTRACT:
This invention provides compositions and methods for fixing a biological sample, particularly fecal samples for diagnosis of parasitic infection. The fixative composition of the present invention comprises glyoxal (pyruvate aldehyde) and zinc sulfate and permits staining of biological samples without use of toxic compounds, such as formaldehyde and mercury-containing compounds. The fixative is compatible with many diagnostic assays, including trichrome stains, hematoxlin, ELISA, fluorescent assays, and lateral flow assays.

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