Diatom test is to determine death due to:
A i.e. Drowning Diatoms test & Gettler's testQ are for drowning deaths. Cutis anserina (goose skin), Washerwoman hand & Paltauf's haemorrhageQ are seen in drowning. Gettler's testQ is also for drowning.
Drowning
Strangulation
Hanging
Burns