Sentence examples for serum samples were checked from inspiring English sources

Serum samples were checked for the absence of Borrelia-specific antibodies by western blot analysis.

All serum samples were checked for hepatitis B using a 3rd-generation HBsAg ELISA test kit (Medivent Diagnostic & Co. Ltd., Ireland) according to the manufacturer's protocol.

Subjects' blood samples were checked for serum galectin-1, galectin-3, 90K/Mac-2BP, and carcinoembryonic antigen by sandwich enzyme-linked immunosorbent assay.

Molecular testing results for these samples were checked in duplicate and by testing different serum samples from the same case-patients.

Sputum samples were checked for bacterial identification.

Second, samples were checked for reproducibility.

All the human serum samples were collected and checked with IHA from the year 2008 onwards and kept at -20°C until used.

The French serum samples were from persons attending routine free health checks proposed to all adults in the general social insurance scheme, which covers >80% of the population [ 23].

All AGID plates with serum samples were incubated at room temperature for up to 48 h and checked every 12 h for the presence of precipitation lines.

Serum samples were collected from the residual sera used for routine check-up of pregnant women, and from stored sera of voluntary blood donors without additional collection.

Serum samples were collected from 2003 through 2007.