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1 NAAT identified 13 (0.1%) of the 12,338 HIV antibody-neg
2 NAAT-negative patients (with and without diarrhea) were
3 NAAT-positive stool samples were tested by an ultrasensi
4 NAATs are both rapid and sensitive.
5 NAATs offer less hands-on time, greater throughput, fast
6 NAATs perform well for detection of chlamydia and gonorr
10 Of the 61 specimens positive by at least 1 NAAT but negative by culture, 24 (39.3%) were positive b
14 and 1 in-house HIV test (6 EIA, 4 RT, and 3 NAAT) on panels of plasma samples from HIV-infected (n =
15 y culture, 24 (39.3%) were positive by all 3 NAATs, suggesting that they represent true positives (TP
16 21.6%) by culture, while at least 1 of the 3 NAATs was positive for GBS in 155 specimens (31.0%).
20 AT cost of US$25, NAAT specificity of 99.6%, NAAT sensitivity of 100% for infants infected in pregnan
23 on, who has been a consistent advocate for a NAAT-only approach for CDI diagnosis, will discuss the v
24 r CDI diagnosis, will discuss the value of a NAAT-only approach, while Christopher Polage of the Univ
26 in validated samples is not required for all NAATs, although initial assay-specific evaluation is jus
29 f three transcription-mediated amplification NAATs targeting unique regions of M. genitalium 16S or 2
30 Median toxin A, toxin B, toxin A + B, and NAAT cycle threshold (Ct) values in CDI-NAAT and carrier
33 d mortality rates between toxin-positive and NAAT-positive-only CDI that were detected by an algorith
38 will update us on the commercially available NAAT systems and explain what their role should be in th
39 performance of three commercially available NAATs (Becton-Dickinson ProbeTec SDA, Gen-Probe Aptima C
45 cutive days, and analyzed using an RNA-based NAAT (Aptima Combo 2) and a DNA-based NAAT (Cobas 4800).
49 improved sensitivities compared to DNA-based NAATs; and the progression of scarring has now been char
50 luorophore-labeled probe types in a biplexed NAAT in a glass fiber membrane; and (2) analyzing the di
52 on of Altona with a laboratory-developed BKV NAAT assay in IU/ml versus copies/ml using Passing-Bablo
53 ble to the primary standard to harmonize BKV NAAT results, we anticipate improved interassay comparis
58 e percent and 22% of the samples positive by NAAT and TC, respectively, were negative by the toxin B
59 -positive samples, 24 (96%) were positive by NAAT, whereas 25 of 25 true-negative samples (100%) show
66 l groups comprised 513 persons not tested by NAAT: 160 healthy laboratory employees, 101 persons posi
67 samples that were C. trachomatis negative by NAATs, 33/45 and 197/212 were correctly identified by th
68 1,000 self-collected vaginal swabs tested by NAATs, the sensitivities for C. trachomatis and N. gonor
71 22 (65%) CDI-NAAT and 34 of 44 (77%) carrier-NAAT had toxin A + B concentration >=20 pg/mL (clinical
72 tions in both CDI-NAAT (n = 122) and carrier-NAAT (n = 44) cohorts spanned 5 logs (0 pg/mL to >100000
73 hreshold (Ct) values in CDI-NAAT and carrier-NAAT cohorts were similar (toxin A, 50.6 vs 60.0 pg/mL,
78 and NAAT cycle threshold (Ct) values in CDI-NAAT and carrier-NAAT cohorts were similar (toxin A, 50.
79 efficacy evidence for the first FDA-cleared NAAT for M. genitalium detection in the United States.
80 ens were tested using culture and commercial NAATs employing transcription-mediated amplification (TM
81 CSF of immunocompetent adults for viral CSF NAAT assays would increase clinical specificity and pres
83 ory automation and the adoption of on-demand NAATs will allow for more streamlined processing of micr
85 AC2, SDA, or PCR were retested by different NAATs (SDA, PCR, AC2, and Aptima Neisseria gonorrhoeae a
86 C2; Digene Corp.) were retested by different NAATs (SDA, PCR, AC2, and the APTIMA assay for C. tracho
87 positive results were confirmed by different NAATs, but that some NAATs cannot be used to confirm oth
90 prospectively by toxin EIA, by C. difficile NAAT, and with a reference standard toxigenic culture.
92 ity, we have developed a multiplexed digital NAAT platform, termed Droplet Digital Ratiometric Fluore
94 al nucleic acid amplification tests (digital NAATs) have emerged as a popular tool for nucleic acid d
95 , cytomegalovirus (CMV), or enterovirus (EV) NAAT with CSF samples between 2008 and 2013 were include
101 study, we evaluated the performance of four NAATs, qPCR, dPCR, real-time quantitative loop mediated
104 esent robust biospecimens for N. gonorrhoeae NAAT testing and may not require confirmation when scree
105 However, the specificity of N. gonorrhoeae NAATs may be suboptimal, particularly for extragenital b
108 sis was more than three times more common in NAAT(+)/toxin(-) than in NAAT(+)/toxin(+) patients.
112 s the role of future iterations of influenza NAATs and whether this testing would be available in a c
115 ce one or more of the benefits of laboratory NAATs, such as sensitivity, internal amplification contr
116 Staphylococcus aureus DNA) in our lab's "MD NAAT" platform, even in biplexed isothermal strand displ
117 evidence for the timing of TOC using modern NAATs is limited, we performed a prospective cohort stud
119 Previously, our group described a multiplex NAAT for the detection of dengue virus, Leptospira, and
120 analyzed 5 years of results for a multiplex NAAT targeting 14 respiratory viruses, to determine how
121 such as S. pyogenes, or commercial multiplex NAATs for detection of a variety of pathogens in gastroi
122 oach could be a new paradigm to evaluate new NAATs when there is no previously defined reference stan
123 f clinicians and biomedical researchers, new NAATs have developed to achieve ultrafast sample-to-answ
125 d DNA sequencing for VVC, and a composite of NAAT and culture for T. vaginalis The prevalences of inf
127 r the detection of GBS, the sensitivities of NAAT, ChromID plus PM CDM at 48 h, and ChromID alone at
131 tunately, the performance characteristics of NAATs have been determined largely with a few limited sp
132 flow and shortening the development cycle of NAATs, our platform may find use in point-of-care diagno
133 detection of TV by routine implementation of NAATs should result in better control of this common, tr
136 ted diagnostic testing with increased use of NAATs when appropriate; routine follow-up visits within
138 carriage, the diagnostic predictive value of NAATs is limited when used in patients with a low probab
150 enrollment had at least 1 rectal CT-positive NAAT after clearance of the initial infection; none repo
158 Patel of the Mayo Clinic, where S. pyogenes NAATs have been used for well over a decade with great s
162 66 NAAT-tested patients, 457 were repeatedly NAAT-negative, and serum samples were obtained for 18 su
163 investigational/research use only (IUO/RUO) NAATs for the detection of C. difficile toxin genes, the
166 g results for retested samples from a second NAAT (Xpert C. difficile/Epi test; Cepheid, Sunnyvale, C
167 Consequently, confirmation with a second NAAT is common, although this represents a burden on res
168 ion recommends that infants undergo a second NAAT to confirm any positive test result, but implementa
169 acid (NA) and species-specific NA sequences, NAATs have become the gold standard in a wide range of a
170 ith presumptive PTB in a low-burden setting, NAAT can reduce AII and is comparably sensitive, more sp
171 plification test (NAAT) results, or a single NAAT-positive result confirmed by an alternate amplifica
175 However, for all other specimen types, some NAATs cannot be used to confirm positive results from ot
176 s have been targeted by T. pallidum-specific NAATs, with the majority of studies indicating that sens
178 n of Trichomonas vaginalis by vaginal swabs; NAATs for detection of Neisseria gonorrhoeae and Chlamyd
179 that were negative by cytotoxicity assay/TC/NAAT, clinical cutoffs were set at 29.4 pg/ml (toxin A)
180 rming nucleic acid amplification techniques (NAATs) in digital format using limiting dilution provide
181 FDA-cleared nucleic acid amplification test (NAAT) but were negative for stx1 and stx2 following nucl
184 assay is a nucleic acid amplification test (NAAT) for the detection of Mycobacterium tuberculosis co
185 diagnostic nucleic acid amplification test (NAAT) for the detection of Mycoplasma genitalium Seven u
186 rmance of a nucleic acid amplification test (NAAT) for the diagnosis of Mycobacterium tuberculosis ba
187 re positive nucleic acid amplification test (NAAT) results, or a single NAAT-positive result confirme
188 ])-positive nucleic acid amplification test (NAAT) results: (i) repeating the original test on the or
191 a positive nucleic acid amplification test (NAAT), per US guidelines, and received CDI treatment.
193 eening, all nucleic acid amplification test (NAAT)-positive respiratory specimens should be universal
194 ed with the nucleic acid amplification test (NAAT; BD MAX Cdiff assay or Xpert C. difficile assay) an
196 n of BKV nucleic acid amplification testing (NAAT) and enabling comparisons of biological measurement
198 ecessary nucleic acid amplification testing (NAAT) for viral pathogens in cerebrospinal fluid (CSF) s
202 cost of nucleic acid amplification testing (NAAT) makes individual testing of at-risk individuals pr
203 ults per nucleic acid amplification testing (NAAT) of viral samples retrieved with nasopharyngeal swa
206 However, nucleic acid amplification testing (NAAT) with the Xpert MTB/RIF assay (Xpert) may be more e
207 tions by nucleic acid amplification testing (NAAT), as they involve a less invasive collection method
210 ation of nucleic acid amplification testing (NAAT; Gen-Probe Aptima Combo 2 assay) for detection of C
211 [TC] and nucleic acid amplification testing [NAAT]) are confounded by asymptomatic colonization by to
212 doption of nucleic acid amplification tests (NAAT) for Clostridium difficile diagnosis and their impa
214 cimens for nucleic acid amplification tests (NAATs) and completed weekly sexual exposure diaries.
215 Commercial nucleic acid amplification tests (NAATs) are becoming available, and their use in screenin
218 bacterium, nucleic acid amplification tests (NAATs) are necessary for its detection in patient specim
223 s (EIA) to nucleic acid amplification tests (NAATs) as the primary diagnostic test for Clostridium di
224 Because nucleic acid amplification tests (NAATs) do not distinguish Clostridium difficile infectio
225 g positive nucleic acid amplification tests (NAATs) for Chlamydia trachomatis: (i) repeat the origina
226 ude use of nucleic acid amplification tests (NAATs) for detection of Trichomonas vaginalis by vaginal
227 d value of nucleic acid amplification tests (NAATs) for detection of TV in men and women at high risk
228 lification nucleic acid amplification tests (NAATs) for diagnosis of BV, VVC, and trichomoniasis.
231 ization of nucleic acid amplification tests (NAATs) for near-patient applications is not the amplific
232 ulture and nucleic acid amplification tests (NAATs) for rectal chlamydial and gonococcal diagnosis.
233 multiplex nucleic acid amplification tests (NAATs) for respiratory viruses should be repeated is dif
234 A-approved nucleic acid amplification tests (NAATs) for the detection or confirmation of HIV-2 infect
235 The use of nucleic acid amplification tests (NAATs) for the diagnosis of Clostridium (Clostridioides)
236 se of some nucleic acid amplification tests (NAATs) for the diagnosis of group A Streptococcus (GAS)
237 ulture and nucleic acid amplification tests (NAATs) for the diagnosis of pharyngeal N. gonorrhoeae.
238 available nucleic acid amplification tests (NAATs) for trichomoniasis are accurate, quick and confir
239 automated nucleic acid amplification tests (NAATs) has greatly improved the assay sensitivity and sp
240 ocessed by nucleic acid amplification tests (NAATs) has significantly increased the utilization of no
241 RNA-based nucleic acid amplification tests (NAATs) have demonstrated improved sensitivities compared
244 and rapid nucleic acid amplification tests (NAATs) in children and adults with suspected influenza.
245 st decade, nucleic acid amplification tests (NAATs) including polymerase chain reaction (PCR) were an
246 transforms nucleic acid amplification tests (NAATs) into phenotypic AST through quantitative detectio
249 o, CA) are nucleic acid amplification tests (NAATs) that detect Chlamydia trachomatis AC2 also detect
250 A)-cleared nucleic acid amplification tests (NAATs) to culture using 314 vaginal/rectal swabs after 1
251 The use of nucleic acid amplification tests (NAATs) to diagnose Neisseria gonorrhoeae infections comp
252 ificity of nucleic acid amplification tests (NAATs) used for early infant diagnosis (EID) of HIV infe
254 ccus (GBS) nucleic acid amplification tests (NAATs) were compared to that of enriched culture for det
255 that time, nucleic acid amplification tests (NAATs) were just becoming commercially available, and th
257 s of three nucleic acid amplification tests (NAATs), the Hologic Panther Fusion GBS, Luminex Aries GB
258 A-approved nucleic acid amplification tests (NAATs), the Panther Fusion and BD MAX systems, for detec
259 s, such as nucleic acid amplification tests (NAATs), to evaluate prepubertal children for N. gonorrho
265 e is a body of literature that suggests that NAATs lack clinical specificity and thus inflate CDI rat
267 otential false negatives in that cohort, the NAAT results of paired OS and NPS samples from 50 additi
274 pecimens were tested simultaneously with the NAATs, following 18 to 24 h of Lim broth enrichment; 15%
281 scordant results, specimens were reflexed to NAAT) and classified as toxin positive or NAAT positive
286 ents (3821 women and 2514 men) received a TV NAAT on endocervical, urethral, or urine specimens.
288 ive performance characteristics of these two NAATs were assessed with genital specimens from 284 wome
291 irmatory testing remained cost-saving unless NAAT cost exceeded US$400 or the HIV-uninfected status o
297 ntial clinical utility for identifying which NAAT- and toxin-positive patients with diarrhea truly ha
299 nrolled men who have sex with men (MSM) with NAAT-diagnosed pharyngeal gonorrhea in a single-arm, unb
300 ostatistical models of specimen pooling with NAAT for the identification of AHI cases; these models i