What Are the Methods for Processing Serum Samples?
The standard methods for processing serum samples are as follows:
Blood Collection
Blood should be collected from the subject’s vein using aseptic techniques and placed into a tube without anticoagulants.
Coagulation
Incubate the blood sample at room temperature for 30 minutes to 1 hour to allow for coagulation.
Centrifugation
Centrifuge the blood sample containing the clot at approximately 1000 to 2000 g for 15 to 20 minutes.
Serum Collection
Carefully aspirate the serum (upper liquid) using a pipette, taking care not to disturb the underlying red blood cells and clot.
Aliquoting and Storage
Aliquot the serum into sterile tubes. If not analyzed immediately, store the samples at -20°C or lower for later use.
Throughout each step, aseptic techniques must be followed to prevent sample contamination. Additionally, processing should be performed as quickly as possible, especially in high-temperature environments, to prevent alterations in the biochemical composition of the serum.
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