We are using the Abbott SARS-CoV-2 IgG Antibody. This is a CE marked test, with 100% specificity (i.e., no false positives) and 97.5% sensitivity (i.e., 2.5 false negatives for every 100 tested). It is analysed by our laboratory, "The Doctors Laboratory" in London who are the largest private-sector lab in the UK, and who also serve the NHS. This test has been authorized for emergency use by the FDA, the US drug agency. On 15/05, Public Health England approved this test for use within the NHS.
The test is available by venipuncture from the practice (by a GP), or the sample can be collected via fingerprick capillary blood. Our laboratory is currently stating that samples obtained by the capillary method have been verified as suitable for this test, however if you have concerns about the fingerprick accuracy, please book a venipuncture appointment.
On the 14/05, Public Health England also approved the Roche antibody test, developed by Roche pharmaceuticals. This, and the Abbott test we are using, are set to be provided by the NHS, but it is unclear to whom it will be available and when. We suspect there will be limited access, as has been the case with the PCR swab testing. The laboratory that we use are constantly reviewing new assays as they become available, as this is an essential part of their service provision. If the Roche test is available to the private sector, we are sure that our laboratory will include it in their reviewing. For the time being, we are continuing to offer the Abbott antibody test that TDL are currently recommending.