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9 Cards in this Set
- Front
- Back
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Name 5 ways to use a faecal sample for worm/egg ID
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Smear, Flotation, Culture, McMasters, Bayermann.
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What kind of faeces should you NOT use for worm/egg ID?
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Old poo! Otherwise may be contaminated.
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Name 3 types of flotation fluid used in McMasters
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Saturated salt, Sugar/Salt, Sodium nitrate.
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Give 3 disadvantages to using a faecal smear
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1. Not quantitative 2. Eggs etc may be hidden by debris 3.Insensitive, dependant on high numbers of eggs in sample
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Name the flotation fluid best used for Fasciola eggs
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Zinc sulphate
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How many grams of faeces and ml of fluid used in McMasters?
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4g and 56ml
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How to calculate eggs per gram, based on McMasters results?
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Add contents of both grids, x 50 = e.p.g.
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Simple flotation?
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3g faeces, 50ml fluid, mix, strain, fill test tube with strained fluid, cover slip on top, wait 20mins, remove slip and place on slide, examine for eggs.
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Reason for quantitative flotation?
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Used when egg numbers to low to detect by McMasters
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