Provided herein is technology relating to the amplification-based detection of bisulfite-treated DNAs and particularly, but not exclusively, to methods and compositions for multiplex amplification of low-level sample DNA prior to further characterization of the sample DNA. The technology further provides methods for isolating DNA from blood or blood product samples, e.g., plasma samples.

Provided herein are methods and compositions to determine the efficacy of a nucleic acid pre-amplification reaction.

A method is disclosed herein for detecting an amplification reaction in a solution containing a biological sample using an array of ion sensors. The amplification reaction is indicative of the presence of a nucleic acid. The method comprises monitoring a signal from each respective sensor of the array of ion sensors, detecting a change in the signal from a first sensor of the array of ion sensors, and comparing the signal from the first sensor with the signal of at least one neighbouring sensor, the at least one neighbouring sensor being proximate to the first sensor in the array. The method further comprises determining, based on the comparing, that an amplification event has occurred in the solution in the vicinity of the first sensor.

A method is disclosed herein for detecting an amplification reaction in a solution containing a biological sample using an array of ion sensors. The amplification reaction is indicative of the presence of a nucleic acid. The method comprises monitoring a signal from each respective sensor of the array of ion sensors, detecting a change in the signal from a first sensor of the array of ion sensors, and comparing the signal from the first sensor with the signal of at least one neighbouring sensor, the at least one neighbouring sensor being proximate to the first sensor in the array. The method further comprises determining, based on the comparing, that an amplification event has occurred in the solution in the vicinity of the first sensor.

The invention relates to a method for determining a sequence of at least one target template nucleic acid molecule using non-mutated sequence reads and mutated sequence reads. The invention also relates to a method for determining a sequence of at least one target template nucleic acid molecule in a sample involving controlling or normalising the number of target template nucleic acid molecules in the sample. The invention also relates to a computer programme adapted to perform the method, a computer readable medium comprising the computer programme, and computer implemented methods.

The invention relates to a method for determining a sequence of at least one target template nucleic acid molecule using non-mutated sequence reads and mutated sequence reads. The invention also relates to a method for determining a sequence of at least one target template nucleic acid molecule in a sample involving controlling or normalising the number of target template nucleic acid molecules in the sample. The invention also relates to a computer programme adapted to perform the method, a computer readable medium comprising the computer programme, and computer implemented methods.

The present disclosure provides methods and systems for nucleic acid sequencing. Such systems and methods may use a single flow cell to perform unbiased and/or biased sequencing to generate libraries of nucleic acid molecules. An aspect of the present disclosure provides a method for increasing complexity of a sample for sequencing, the method comprising: providing a first nucleic acid sample having a first degree of complexity that differs from a desired degree of complexity; providing a second nucleic acid sample having a second degree of complexity that differs from the first degree of complexity and that differs from the desired degree of complexity; pooling at least a portion of the first nucleic acid sample and at least a portion of the second nucleic acid sample, thereby generating a pooled nucleic acid sample having the desired degree of complexity; and sequencing at least a portion of the pooled nucleic acid sample.

The present disclosure provides methods and systems for nucleic acid sequencing. Such systems and methods may use a single flow cell to perform unbiased and/or biased sequencing to generate libraries of nucleic acid molecules. An aspect of the present disclosure provides a method for increasing complexity of a sample for sequencing, the method comprising: providing a first nucleic acid sample having a first degree of complexity that differs from a desired degree of complexity; providing a second nucleic acid sample having a second degree of complexity that differs from the first degree of complexity and that differs from the desired degree of complexity; pooling at least a portion of the first nucleic acid sample and at least a portion of the second nucleic acid sample, thereby generating a pooled nucleic acid sample having the desired degree of complexity; and sequencing at least a portion of the pooled nucleic acid sample.

Provided herein are methods and systems for detecting the presence of absence of a target-nucleic acid sequence, including SARS-COV2.

Provided herein are methods and systems for detecting the presence of absence of a target-nucleic acid sequence, including SARS-COV2.