What do I need to be aware of when extracting nucleic acids from cell samples?

When using cell samples for nucleic acid extraction, there are several things to keep in mind:
Cell collection: ensure adequate cell collection to avoid cell loss.
Adequate lysis: Ensure cells are adequately lysed to release nucleic acids.
Avoid contamination: Strictly prevent the contamination of exogenous nucleic acids and keep the experimental environment clean.
Gentle operation: operate the process gently to avoid damage to nucleic acids.
Reagent quality: Use high quality extraction reagents to ensure the extraction effect.
Storage conditions: Pay attention to the storage conditions of cell samples to avoid nucleic acid degradation.

Nucleic acid extraction kits are suitable for a wide range of sample types, commonly including:
Blood: including whole blood, plasma and serum.
Saliva.
Tissue samples: such as liver, kidney, muscle, etc.
Cells: e.g. cultured cells, etc.
Body fluids: e.g. urine, cerebrospinal fluid, etc.
Swab samples: e.g. nasopharyngeal swabs, oral swabs, etc.