6 Serum or plasma must be stored in a closed test tube.
Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues. Proteins perform a vast array of functions within living organisms, including DNA replication, catalyzing metabolic reactions, responding to stimuli, and transporting molecules from one location to another.
We supply protein, which is generally consumed immediately before and after exercising, or in place of a meal. Some types of protein are to be taken directly before and after a workout, while others are to be taken before going to bed. The theory behind this supplementation is that bodybuilders, by virtue of their unique training methods and end-goals, require higher-than-average quantities of protein to support maximal muscle growth.
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Separation of serum or plasma from contact with blood cells and clots should be completed as soon as possible after the blood collection (within 2 hours): (1) Centrifugal time and relative centrifugal force (RCF): Clinical chemical analysis When the blood specimen is centrifuged, RCF (1000 to 1200) ×g, the centrifugation time is 5 to 10 min.
(2) Temperature control Centrifugation: Heat generation during centrifugation is not conducive to the stability of the analyte. Clinical chemical analysis must be performed with a temperature-controlled centrifuge when the blood specimen is centrifuged. Some temperature-dependent analytes (such as adrenocorticotropic hormone, cyclic adenosine monophosphate, catecholamines, etc.) should be separated at 4 ° C; no unusual temperature requirements of the analyte, the centrifugation temperature should be set at 20 ° C ~ 22 ° C; temperature is lower than The blood potassium measurement can be artificially increased at 15 ° C; the refrigerated specimen must be centrifuged at the required temperature.
(3) Storage of separated serum or plasma: laboratory temperature and storage temperature and time of serum or plasma are important parameters for analyte stability and accuracy of measurement results:
1 at 22 ° C ~ 25 ° C, serum or plasma preservation does not exceed 8h;
2 When the experiment cannot be completed within 8 hours, the serum or plasma should be stored at 2 ° C ~ 8 ° C;
The experimental items that cannot be completed within 348 hours, or the separated serum or plasma should be stored at -20 °C when stored for more than 48 hours;
4 specimens can not be frozen and thawed (can only freeze and thaw once), and can not be stored in a frost-free refrigerator (can cause sample temperature changes);
5 After centrifugation, the serum on the gel (gel barrier) can be stored for 2 to 5 days (also reported at 4 ° C for 24 hours), but the integrity of the gel must be ensured; The serum or plasma must be removed immediately afterwards.