The methods of collection can vary depending on the type of material:
Blood collection: Typically done via venipuncture or heel stick in infants. Urine collection: Non-invasive and can be collected using urine bags or catheters. Saliva collection: Usually done using cotton swabs or specialized collection kits. Tissue biopsy: Involves minor surgical procedures to collect small tissue samples. Lumbar puncture: A needle is inserted into the lower back to collect CSF.