RFS Panodyne Antigen Test Kit. Box of 24

No this is an Antigen test. A PCR test otherwise known as The polymerase chain reaction is a routine laboratory technique used to amplify small samples of DNA into larger quantities that can be detected and analysed. For patient diagnosis, a viral RNA or DNA sample is taken by swab or blood draw, before being sent to a specialist laboratory for analysis.

For RNA viruses, such as SARS-CoV-2, the polymerase chain reaction is preceded by an additional step to produce a complementary DNA template (cDNA) from RNA, by the addition of a reverse transcriptase enzyme (hence, Reverse Transcription-PCR (RT-PCR).
PCR then begins by the addition of short DNA sequences known as primers, which bind the viral DNA strands. The double-stranded section of DNA is then recognised and bound by a thermostable polymerase enzyme which acts as a molecular photocopier to extend the
sequence and produce a full, complementary strand.

Yes the box of 24 has 24 individual boxes as single kits.

Rapid testing for SARS-CoV-2 antigen should provide results within 15 minutes

While antibodies aren’t suitable for diagnosing active COVID-19 infections, antigens are likely detectable in the sputum from the onset of symptoms [13]. What’s more, by combining antigen detection with a format that can provide rapid results for use at the point-of-care (PoC), community-based, or even door-to-door testing could soon become a reality – allowing those who suspect an infection to get quick results and determine whether they should isolate and/or seek medical care.

The major caveat of formats such as ELISA, are that they are unwieldy, and require trained scientists, operating in sterile laboratory conditions – not to mention, the complications of specimen collection and cold-chain logistics, that use up scarce healthcare resources.
Fortunately, a range of PoC formats have been developed with simplicity and portability in mind. So-called lateral flow assays (LFAs) are the most popular choice. These simple and easy-to-produce devices rely on the property of fluid analytes to move through absorbent substances on their own accord, via a phenomenon known as capillary flow.

SARS-CoV-2 Antigen Rapid Test Performance with Comparator Method (nasopharyngeal swab/oropharyngeal swab)
PPA: 90.91% (95%CI: 76.43%-96.86%)
NPA: 99.02% (95%CI: 94.66%-99.83%)
OPA: 97.04% (95%CI: 92.63%-98.84%)

Unlike molecular techniques, immunoassays detect the presence of specific immune proteins.
These assays take on a wide range of different formats, but essentially consist of an antigen or antibody, immobilised on a surface (most often a titre plate or paper strip), which binds virus-specific antigens or antibodies from a patient sample (i.e. sputum or blood sera). By adding a further reporter protein, it is then possible to detect a virus-specific immune signal to confirm the presence of ongoing or past viral infection.

PPA: Positive Percent Agreement = True Positives / True Positives + False Negatives

NPA: Negative Percent Agreement = True Negatives / True Negatives + False Positives

OPA: Overall Percent Agreement = True Positives + True Negatives / Total