Sentence examples for negative specimens from inspiring English sources

Two culture negative specimens were FDA positive.

In the same study, PCR was able to detect causative fungi in 5 culture negative specimens.

Parameters β1. to β4 account for trends and the seasonality of truly negative specimens (patients presenting with other acute respiratory infections).

For quality control, all positive specimens and a random sample of 5% of negative specimens was retested in a different laboratory using the same testing algorithm.

Negative specimens were measured undiluted.

PGMY/GP+ negative specimens were further analyzed using FAP primers.

The percentage of marijuana-negative specimens was significantly greater during voucher intervention than during baseline periods.

In evaluation of bPCR-ELISA, a clear distinction between PCR-positive and PCR-negative specimens when an OD405 value of 0.6 was chosen as cut-off.

Results: Optimal detection and discrimination of HIV-1 antibody-positive and HIV-1 antibody-negative specimens was observed in pool sizes of five to ten for both assays.

The assay did not cross-react with high concentrations of 21 potentially cross-reactive microorganisms or with 100 HCV-negative specimens.

Of all culture positive specimens, 99.2% of smear-positive and 95.5% of smear-negative specimens were positive by MGIT while LJ recovery rates were 90.9% for smear-positives and 73.2% for smear-negative specimens.