What is a pharyngeal swab used for?
Used to transport pharyngeal swab specimens or site-specific tissue specimens from the sampling site to the testing laboratory pending PCR extraction and testing.
Pharyngeal swabs are used in the following ways.
I: Using the Sampling Swab 50 Instructions Fresh Tissue Samples 1. Estimate the volume of this product needed to completely submerge the sample (10mL for 1g of tissue).
2. Mark the collection tube and add the estimated required amount of this product.
3. Cut the sample into pieces less than 0.5 cm thick as fast as possible. Note: Small organ samples such as mouse liver, kidney and spleen and plant samples without wax protection layer can be stored in this product without shearing, while plant samples with wax protection layer need to have the wax skin broken first.
4. Completely submerge the tissue fragments in the collection tube of this product.
5. Store the collection tube at an appropriate temperature for no longer than the zui storage time at that temperature. For storage at -20°C or -80°C, leave the sample at 4°C overnight before transferring to the final temperature.
Note: Before transferring the sample to -20°C or -80°C, the protective solution needs to be discarded. A common storage temperature in relation to its zui storage time is as follows.
6. Remove the sample from storage (samples stored at -20°C or -80°C need to be melted at room temperature) and remove the tissue fragments from the protective solution using sterilized forceps.
Immediately start RNA extraction or other processing (e.g., splitting the sample into smaller pieces for re-preservation, etc.). Note: Samples can be repeatedly freeze-thawed up to twenty times without affecting the quality of the RNA.
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