Sentence examples for assay were negative from inspiring English sources

Rapid plasma reagin and Treponema pallidum hemagglutination assay were negative.

A CSF cryptococcal antigen titer and HTLV I/II antibody assay were negative; a VDRL test was non-reactive.

Antigenemia assay were negative in all cases, however, viral nucleic acid were found in 6.3 and in 6.0% of the patients in abortion and in control groups, respectively.

The DELFIA and CAP were comparable for sensitivity however some patients positive to one assay were negative to the other and visa versa.

However, both TFE3 staining and FISH assay were negative in all PRCC cases.

Phenotypically identification of NTM by niacin production and catalase assay were negative in 62/227 (27.4%).

However, the qPCR assay was negative for 54 of 229 individuals with palpable nodules.

If the Accuprobe assay was negative, isolates were identified as M. tuberculosis by PCR as previously described [13].

The lipL32 assay was negative for the non-pathogenic Leptospira spp. tested, but the rrs assay was positive for two strains (L. terpstrae serovar Hualin strain LT11-33 and L. yanagawae serovar Saopaulo strain Sao Paulo).

In our previous study, a high proportion of children with a household TB contact positive by TST were negative by QFT-TB Gold and the assay was negative in almost half of the children with a TST >15 mm.

This is different than the results of Soysal et al [12] who reported that their in-house IFN-γ ELISPOT assay was negative more often in BCG immunized than in unimmunized children.