PAXgene Blood DNA Kit

The typical A260/A280 ratio is from 1.7 to 1.9. The DNA molecules are up to 200 kb in size, with fragments of 50–150 kb predominating.

Yes, samples in PAXgene Blood DNA Tubes can be stored at 30°C for up to 3 days after blood collection. However, it is not recommended to store blood samples at temperatures higher than 30°C and storage at high temperatures should not exceed 3 days.

The typical A₂₆₀/A₂₈₀ ratio is from 1.7 to 1.9.

Yield of genomic DNA varies depending on the white blood cell count of the patient blood sample, the extraction method, and the elution volume. However, DNA yield typically ranges between 16–135 µg/ml whole blood. Specifically, DNA yields from magnetic bead-based extraction on the QIAsymphony ranges between 16.9–51.7 µg/ml whole blood, from silica membrane-based extraction on the QIAcube 17.1–45.8 µg/ml whole blood, and from salting-out precipitation 4.9–53.7 µg/ml whole blood.

Yes, mitochondrial and genomic DNA are both isolated.

No. The volume of Buffer BG1 (lysis buffer) prefilled in the processing tubes, and all the other buffer volumes are optimized for use with blood from one PAXgene Blood DNA Tube.

To date, DNA purified from blood samples in PAXgene Blood DNA Tubes has been successfully tested for use in PCR, including multiplex PCR.

DNA purified using the PAXgene Blood DNA System should be dissolved in Buffer BG4 and stored at 2–8°C. For long-term storage, DNA can be stored at –20°C but multiple freezing and thawing cycles should be avoided.

Yes. After dissolving the nuclei pellet in digestion buffer, Buffer BG3 (step 7), samples can be stored up to 7 days at 2–8°C or for one day at room temperature (18–25°C). The protocol can also be interrupted after adding isopropanol (step 10).

So far, we have shown that DNA purified using the PAXgene Blood DNA System can be used in PCR, including long range and multiplex PCR, restriction digestion and Southern analysis, as well as in various SNP detection procedures including,TaqMan®, LightCycler and Masscode technologies.

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Do not add bleach or acidic solutions directly to the sample preparation waste. CAUTION: The sample preparation waste contains guanidinium hydrochloride from Buffer BG3, which can form highly reactive compounds when combined with bleach. For more information please consult the appropriate material safety data sheets (MSDS).

The system is designed for use only with human blood samples.

Always dispose of potentially biohazardous solutions according to your institution’s waste-disposal guidelines. Although the lysis and binding buffers in QIAamp, DNeasy, and RNeasy kits contain chaotropic agents that can inactivate some biohazardous material, local regulations dictate the proper way to dispose of biohazards. DO NOT add bleach or acidic solutions directly to the sample-preparation waste. Guanidine hydrochloride in the sample-preparation waste can form highly reactive compounds when combined with bleach.
Please access our Material Safety Data Sheets (MSDS) online for detailed information on the reagents for each respective kit.