cutoff level

cutoff level

(kut'of?)
In laboratory testing, the threshold value that distinguishes a positive test result from a negative one.
Synonym: breakpoint
References in periodicals archive ?
The physician said the federal cutoff level was 15,000 ng/mL and that her screen should have been reported as negative.
Using a cutoff level of >10 CSF ADA has a sensitivity of 92.5% and specificity 89.32%.
Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) at 6.5% cutoff level of HbA1c for diabetes were calculated using 2x2 table.
The researchers found that the indirect water-deprivation test determined the correct diagnosis in 108 of the 141 patients included in the analysis (diagnostic accuracy, 76.6 percent), while the hypertonic saline infusion test (with a copeptin cutoff level of >4.9 pmol per liter) determined the correct diagnosis in 136 patients (96.5 percent).
Among group 2 infants (those with cases diagnosed on the second screen), TSH concentrations were lower on the first screen, with all infants having concentrations below the cutoff value of 40 [micro]IU/mL (range = 5.3-39.8 [micro]IU/mL) resulting in normal first screen designation, but with TSH concentrations above the cutoff level on the second screen (Figure 1).
Focusing on the cutoff level of HE4, when we use the cutoff value of HE4 at 70 pMol/L, it would give the sensitivity (74.1%) and specificity (86.5%) to differentiate between benign and malignant ovarian cancer which were comparable to diagnostic value of ROMA (Table 3).
If these segments are large, it is sometimes necessary to resect a further 5% to achieve the cutoff level [16, 17].
The optimal cutoff level to diagnose BAM varies from [less than or equal to] 10% to [less than or equal to] 15% [2].
At a cutoff level of 0.625 ng/mL, sensitivity, specificity, PPV, and NPV were 66.4% (95% CI: 57.5-74.5%), 76.5% (95% CI: 64.3-86.2%), 29.7% (95% CI: 18.2-43.5%), and 93.8% (95% CI: 88.4-97.2%), respectively (Figure lc).
Although the level of CRP has been shown by many reports to determine the severity of AP, the cutoff level of CRP to differentiate the mild and severe forms have been reported to significantly vary.
The independent water tests that were conducted post-ePIPE showed lead levels were reduced to less than 1ppb (well below the EPA cutoff level of 15ppb), ensuring the tap water is healthy and safe to drink.