write the various procedures for the preservation of various biological samples?
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PRESERVATION:
· Whole Blood: Blood should be collected in sterile container containing an anticoagulant. The mostly preferred is EDTA. It should be mixed properly but gently for some time. The container should be covered with parafilm to avoid slippage. Should be kept it at 40C or using ice during transportation till it reaches laboratory for analysis.
· Blood stain: Blood stain should be dried properly. In semi dry stain there, is a possibility of bacterial growth thus chances of having contamination. Drying should be avoided using electric fans. After complete drying it should be wrapped in a fresh blotting paper and packed in a Zip lock poly bag. No preservative is required. It can be transported at environmental temperature.
· Seminal stain: Likewise seminal stain should also be dried properly. In semi dry stain there, is a possibility of bacterial growth thus chances of having contamination. It should not be dried using electric fans. After drying it should be wrapped in a fresh blotting paper and packed in a Zip lock poly bag. No preservative is required. It can be transported at environmental temperature.
· Hard Tissue: No preservative is required. The hard tissues should be wrapped in the blotting paper and placed in a zip lock poly bag.
· Soft tissue: It should be placed at 40C or in Ice till it reaches laboratory for analysis.
· Hair: Hair roots should be placed in a blotting paper and then packed in a zip lock poly bag. It requires no preservative and can be transported at environmental temperature.
· Whole Blood: Blood should be collected in sterile container containing an anticoagulant. The mostly preferred is EDTA. It should be mixed properly but gently for some time. The container should be covered with parafilm to avoid slippage. Should be kept it at 40C or using ice during transportation till it reaches laboratory for analysis.
· Blood stain: Blood stain should be dried properly. In semi dry stain there, is a possibility of bacterial growth thus chances of having contamination. Drying should be avoided using electric fans. After complete drying it should be wrapped in a fresh blotting paper and packed in a Zip lock poly bag. No preservative is required. It can be transported at environmental temperature.
· Seminal stain: Likewise seminal stain should also be dried properly. In semi dry stain there, is a possibility of bacterial growth thus chances of having contamination. It should not be dried using electric fans. After drying it should be wrapped in a fresh blotting paper and packed in a Zip lock poly bag. No preservative is required. It can be transported at environmental temperature.
· Hard Tissue: No preservative is required. The hard tissues should be wrapped in the blotting paper and placed in a zip lock poly bag.
· Soft tissue: It should be placed at 40C or in Ice till it reaches laboratory for analysis.
· Hair: Hair roots should be placed in a blotting paper and then packed in a zip lock poly bag. It requires no preservative and can be transported at environmental temperature.
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