Biological research involves collection and preservation of a variety of biological samples. Samples are usually stored at specific temperate conditions to retain its properties.
Let?s take the instance of blood sample and analyze its preservation techniques.
Blood Sample Storage
Blood is usually collected from human body using a finger prick or venipuncture to examine your health condition and various other medical researches. In normal diagnosis blood sample are examined immediately to avoid any alterations that may happen in the content during the passage of time. The maximum time it can stay at room temperature would be 48 hours. Normally diseases are detected through blood samples analysis before this time.
For large scale clinical research, blood is preserved in blood banks under cold storage. Blood banks are capable of storing store blood for about a week in their freezers. Samples are refrigerated to 4?C without any delay. And they are shipped in refrigerated packaging at 4?C.
DNA based Storage
Utmost care is taken to conserve DNA based biological samples. Total information about the donor value and history are saved in the Bio bank. Biological samples for DNA tests are to protect from any kind of physical damage. Low temperature storages are usually used to preserve these kinds of samples. Gentra Puregene Blood Kit would be one of the recent techniques used to preserve the blood storage temperature to maintain DNA quantity and quality.
Room Temperature Storage
Certain researches find the benefits of room temperature storage outweighing cold storage. In room temperature, biological samples tend to sustain more efficiently.
Risks of Cold Storage
? Large amount of waste materials are generated due to cold storage and shipping
? Unnecessary expenditure when compared to room temperature storage.
? Power failure remains as a threat to samples and can lead to its degradation.
However, there are a lot of advanced technologies being invented to prevent the degradation of biological samples.
Source: http://articlebro.com/2012/health-fitness/learn-how-to-preserve-biological-samples/
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