positive cutoff

A cutoff, 2 which extends downward to an impervious lower boundary, completely blocking the path of subsurface seepage.

References in periodicals archive ?

First, although an ARR [greater than or equal to] 3.7 was used as the positive cutoff in the screening protocol, many patients who tested negative also underwent the confirmatory tests, which avoided overestimating the accuracy of the ARR.

Kaplan et al, (11) 10% positive cutoff. 2005 2-[micro]m sections.

Comparison of Estrogen and Progesterone Receptor Antibody Reagents Using Proficiency Testing Data

tularensis antigens were detected by use of ELISA (Virion-Serion, Wurzburg, Germany) in serum obtained 2 months after the onset of symptoms in concentrations of 147.13 and 222.74 U/mL, respectively (positive cutoff >15 U/mL).

Francisella tularensis subspecies holarctica, Tasmania, Australia, 2011

For individuals with HIV or any other underlying disease condition, such as malignancy, the positive cutoff threshold drops to 5-9 mm.

Comparacion entre la prueba QuantiFERON[R]-TB Gold y la prueba cutanea de la tuberculina para detectar la infeccion tuberculosa latente en grupos destinatarios en Trinidad y Tabago

The SAMHSA positive cutoff values for urine drugs-of-abuse testing are also given in Table 1.

Urinary adulterants and drugs-at-abuse testing. (Clinical Issues)

"A false positive cutoff of 5% still gave us a detection rate of 79%, and at a 1% false-positive rate we still maintained a 64% detection rate for trisomy 21," said Dr.

First-trimester screen for aneuploidy is accurate. (More Time to Weigh Options)

Snuffback at the end of the dispense cycle can ensure a clean, positive cutoff. The unit's low-maintenance design features an efficient fluid path to prevent paste from clogging inside the valve.

In Focus

A high-speed, positive cutoff, surface-type contact winder was introduced by Kuhne GmbH (represented by O/K International, Wayland, Mass.).

Extrusion

It also requires frequent and dynamic reassessment of positive cutoff values.

PD-L1 and Lung Cancer: The Era of Precision-ish Medicine?

Using RT-PCR to test for HCV RNA, we examined 58 samples from children: all 27 samples with antibody-positive results, 11 with high-negative (near the positive cutoff) results, 10 with negative results from children with a history of frequent transfusions, and 10 with low-negative results from children with no history of transfusion.

Hepatitis C virus genotype 4 in Ugandan children and their mothers

The proportion of positive Leptospira microscopic agglutination tests for 23,005 dogs significantly increased from 2002 to 2004 (p<0.002) regardless of the positive cutoff titer used and was highest (p<0.05) for serovars Autumnalis and Grippotyphosa.

Canine Leptospirosis, United States, 2002-2004

The positive cutoff value for the Access IFAB Assay was determined by ROC analysis of 499 samples across a IFAB concentration range of 0.93-12.25 AU/mL, with the results of the DPC RIA used as the comparison method.

Development and validation of an automated chemiluminometric immunoassay for human intrinsic factor antibodies in serum