Laboratory-Developed Real-Time RT-PCR test

ichs2020

Comparison of SARS-CoV-2 Detection from Nasopharyngeal Swab Samples by the Roche cobas® 6800 SARS-CoV-2 Test and a Laboratory-Developed Real-Time RT-PCR test.

  • The urgent need to implement and rapidly expand testing for Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) infection has led to development of multiple assays. How these tests perform relative to one another is poorly understood. We evaluated the concordance between the Roche Diagnostics cobas® 6800 SARS-CoV-2 Test and a laboratory- developed Real-Time RT-PCR test (LDT) based on a modified Centers for Disease Control and Prevention (CDC) protocol, for the detection of SARS-CoV-2 in samples submitted to the Clinical Laboratories of the Mount Sinai Health System. 1006 Nasopharyngeal swabs in universal transport medium from persons under investigation were tested for SARS-CoV-2 as part of routine clinical care using the cobas SARS-CoV2 test with subsequent evaluation by the LDT.
  • Cycle threshold values were analyzed and interpreted as either positive (‘Detected’ or ‘Presumptive Positive’), negative (‘Not Detected’), inconclusive, or invalid. Statistical analysis was performed using GraphPad Prism 8. The cobas SARS-CoV2 test reported 706 positives and 300 negatives. The LDT reported 640 positives, 323 negatives, 34 inconclusive, and 9 invalids. When excluding inconclusive and invalid results, the overall percent agreement between the two platforms was 95.8%.
  • Cohen’s kappa coefficient (κ) was 0.904 (95 % CI 0.875-0.933), suggesting almost perfect agreement between both platforms. An overall discordance rate of 4.2% between the two systems may reflect differences in primer sequences, assay limit of detection, or other factors, highlighting the importance of comparing the performance of different testing platforms. This article is protected by copyright. All rights reserved.
ichs2020
ichs2020

Ready? PCR Mix-Dye

M1128-1000 each
EUR 614.4

Ready? PCR Mix-Dye

M1128-200 each
EUR 229.2

Image Ready? PCR Mix

M1129-200 each
EUR 352.8

Rigor? PCR Mix-Dye

M1133-200 each
EUR 385.2

Whole Blood PCR Mix

M1143-200 each
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Robust Ready? PCR Mix

M1130-1000 each
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Robust Ready? PCR Mix

M1130-200 each
EUR 255.6

Breeze? PCR Mix-Dye

M1135-200 each
EUR 320.4

Distant? PCR Mix-Dye

M1137-200 each
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Image Distant? PCR Mix

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Advance? PCR Mix-Dye

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PCR-EZ D-PCR MASTER MIX

BS294 100RXN, 100prep
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amfiSure PCR Master Mix

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amfiSure PCR Master Mix

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amfiSure PCR Master Mix

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amfiSure PCR Master Mix

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amfiSure PCR Master Mix

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amfiSure PCR Master Mix

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amfiSure PCR Master Mix

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amfiXpand PCR Master Mix

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amfiXpand PCR Master Mix

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amfiXpand PCR Master Mix

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amfiXpand PCR Master Mix

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Taq 2x PCR Mix 100 rxn

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Description: High quality Taq polymerase for different PCR variations and downstream applications.

MyTaq Blood PCR Mix, 2x

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MyTaq Blood PCR Mix, 2x

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HotTaq 2x PCR Mix 100 rxn

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Description: High quality HotTaq polymerase for different PCR variations and downstream applications.

RedTaq 2x PCR Mix 100 rxn

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Description: High quality RedTaq polymerase for different PCR variations and downstream applications.

Fire Start? PCR Mix-Dye

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HiScript-TS 2 × PCR Mix

RA103-01 40 rxns (25 μl/rxn)
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HiScript-TS 2 × PCR Mix

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Robust Ready? PCR Mix-Dye

M1131-1000 each
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Robust Ready? PCR Mix-Dye

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mRNAExpress Tail PCR mix (5uM)

MR-TAIL-PR 100 ul
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Taq 5x PCR Mix 12.5 mM

BT10402 250rxn
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Description: High quality Taq polymerase for different PCR variations and downstream applications.

amfiSure Prime PCR Master Mix

P1311-025 5X50 rxns
EUR 193.2

amfiSure Prime PCR Master Mix

P1311-050 10X50 rxns
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amfiSure Prime PCR Master Mix

P1311-125 15X50 rxns
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amfiSure Prime PCR Master Mix

P1311-250 50x50 rxns
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amfiSure Prime PCR Master Mix

P1311-500 100x50 rxns
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amfiSure Advanced PCR Master Mix

P2311-025 5X50 rxns
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amfiSure Advanced PCR Master Mix

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EUR 267.6

amfiSure Advanced PCR Master Mix

P2311-125 15X50 rxns
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amfiSure Advanced PCR Master Mix

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amfiSure Advanced PCR Master Mix

P2311-500 100x50 rxns
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amfiSure ONE PCR Master Mix(2X)

P7000-005 5x1 ml
EUR 262.8

amfiSure ONE PCR Master Mix(2X)

P7000-010 10x1 ml
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amfiSure ONE PCR Master Mix(2X)

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EUR 1453.2

amfiSure ONE PCR Master Mix(2X)

P7000-100 100x1 ml
EUR 2522.4

Taq PCR Master Mix (2X, Red Dye)

BS9297 1ml
EUR 101.76

Taq PCR Master Mix (2X, Red Dye)

BS9298 5ml
EUR 227.04

Taq PCR Master Mix (2X, Blue Dye)

BS9295 1ml
EUR 101.76

Taq PCR Master Mix (2X, Blue Dye)

BS9296 5ml
EUR 227.04

2×Taq PCR Master Mix(with dye)

K1034-1 1 ml
EUR 87.6

2×Taq PCR Master Mix(with dye)

K1034-100 100×1 ml
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2×Taq PCR Master Mix(with dye)

K1034-20 20×1 ml
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2×Taq PCR Master Mix(with dye)

K1034-5 5×1 ml
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2×Taq PCR Master Mix(with dye)

K1034-50 50×1 ml
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HotStart PCR Master mix (2X, Green Dye)

BS9291 5X1mL, 5ml
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HotStart PCR Master mix (2X, Green Dye)

BS9292 1ml
EUR 115.68

1-Drop PCR Mix (squeeze bottle, no pipet)

W2599-5 - Ask for price

1-Drop PCR Mix (squeeze bottle, no pipet)

W2599S - Ask for price

amfiSure Ultra Fidelity PCR Master Mix(2X)

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amfiSure Ultra Fidelity PCR Master Mix(2X)

P0346-002 2x1ml
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amfiSure Ultra Fidelity PCR Master Mix(2X)

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P0346-010 10x1ml
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Reverse Transcriptase RT PCR Master Mix (5X)

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Reverse Transcriptase RT PCR Master Mix (5X)

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Reverse Transcriptase RT PCR Master Mix (5X)

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amfiFusion High Fidelity PCR Master Mix(2X)

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amfiFusion High Fidelity PCR Master Mix(2X)

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amfiFusion High Fidelity PCR Master Mix(2X)

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amfiFusion High Fidelity PCR Master Mix(2X)

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Extra T7 gRNA PCR primer mix (5 uM)

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Taq 5x PCR Mix Ready-to-Load 12.5 mM

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ReadiUseâ„¢ dNTP Mix Set *10 mM PCR Grade*

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2x Genotyping PCR Ready Master Mix (250 x 20µL rxn)

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Accuris High Fidelity PCR Master Mix, sample, 5 rxns

PR1001-HF-S 1 each
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2x GoldStar Best PCR Master Mix (with Dyes), 20 ul/rxn

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2x GoldStar Best PCR Master Mix (with Dyes), 20 ul/rxn

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lyophilised real-time PCR Master Mix for dual labeled probes

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Description: lyophilised real-time PCR Master Mix for dual labeled probes

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The accuracy of the Montenegro skin test for leishmaniasis in PCR-negative patients.

As highly specific molecular biology-based techniques may not be sensitive enough for the diagnosis of American tegumentary leishmaniasis (ATL), clinicians frequently rely on immunological tests before treatment initiation. Hence, the correct combination of diagnostic tests is imperative for ATL diagnosis. We aimed to evaluate the accuracy of the Montenegro (Leishmanin) skin test (MST) in polymerase chain reaction (PCR)-negative patients to accurately detect ATL.Patients with a clinical picture compatible with ATL were divided into ATL (confirmed by lesion smear, culture indirect immunofluorescence, and/or histopathology) and no-ATL (diseases that can mimic leishmaniasis) groups. Conventional PCR for the minicircle kDNA of Leishmania was performed, and the MST was carried out for PCR-negative patients.Ninety-nine patients were included in this study, including 79 diagnosed with ATL (6 with mucocutaneous leishmaniasis) and 20 without ATL (no-ATL group).
The MST showed a high sensitivity of 90.0% (95% confidence interval [CI] = 69.90-97.21) in PCR-negative patients that was 10% higher than the sensitivity reported in PCR-positive population (79.66%; 95% CI = 67.73-87.96).One of the most important reasons for PCR negativity among patients with active ATL is the presence of a strong cellular immunological response, especially in chronic and mucocutaneous leishmaniasis. This reinforces the considerable utility of the tests that detect cellular responses against Leishmania antigens such as the MST in PCR-negative patients when the performance in screening situations is questionable.

Positive RT-PCRtests among discharged COVID-19 patients in Shenzhen, China.

Among all 209 discharged coronavirus 2019 patients in Shenzhen China between January 23 and February 21, 2020, there are 9 (4.3%) patients showed RT-PCR positive in throat swabs, 13 (6.2%) patients showed RT-PCR positive in anal swabs, and 22 (10.5%) positive in either type.
The time between discharge and positive RT-PCR tests is 4.7 days on average. These numbers shed light on the viral dynamics of COVID-19.

A case report of COVID-19 with false negative RT-PCR test: necessity of chest CT.

The definite diagnosis of corona virus disease 2019 (COVID-19) is based on the viral isolation or positive result of polymerase chain reaction (PCR) from sputum, or nasal swab, or throat swab. However, the sensitivity to detect COVID-19 of real time (RT)-PCR is reported to be lower than that of chest CT. We report a case of 34-year-old man who was diagnosed as negative for COVID-19 based on the four sequential RT-PCR tests of his pharyngeal swab.
Chest CT showed patchy ground-glass opacity on admission, and it rapidly progressed to segmental mixed consolidation and ground-glass opacity 3 days after admission, and it resolved in left upper lobe, but showed multifocal ground-glass opacities 7 days after admission, and they resolved within 2 weeks. The fifth RT-PCR test finally revealed positive results at the fifth day after admission.
It is difficult to distinguish COVID-19 pneumonia from other viral pneumonia on CT findings alone; however, we emphasize the utility of chest CT to detect early change of COVID-19 in cases which RT-PCR tests show negative results

AzuraQuant cDNA Synthesis Kit - 25 Reactions

AZ-1995 25 Reactions
EUR 183.6

Eco 48 Real Time PCR system including software and loading dock

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Eztime Real - time PCRPremix 2x,SYBR Green

FYT103-100P 100 Preps 1.25 ml Ask for price

Eztime Real - time PCRPremix 2x,SYBR Green

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Eztime Real - time PCRPremix 2x,Taqman, ROX

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Eztime Real - time PCRPremix 2x,Taqman, ROX

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Eztime Real - time PCRPremix 2x,SYBRGreen , ROX

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Eztime Real - time PCRPremix 2x,SYBRGreen , ROX

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Novel Coronavirus COVID-19 (2019-nCoV) Real Time RT-PCR Kit

RR-0478-02 25 tests/kit
EUR 1189.2
Description: Novel Coronavirus (2019-nCoV) Real Time RT-PCR Kit is used for the qualitative detection of a novel coronavirus, which was identified in 2019 at Wuhan City, Hubei Province, China, in upper respiratory tract specimens (nasopharyngeal extracts, deep cough sputum, etc.) and lower respiratory tract specimens (alveoli irrigation fluid, etc.) by real time PCR systems.

Green Dye One Step qRT-PCR Master Mix For Quantitative Real Time PCR With ROX Dye

MB1004-100Reactions 100 Reactions
EUR 392.4

TurboQ Real-time PCR Machine with Laptop

MOL2700 EACH
EUR 33836.4

dsGreen for Real-Time PCR, 100×, 2 mL

61010 2 mL
EUR 435.6

dsGreen for Real-Time PCR, 100×, 5 mL

71010 5 mL
EUR 750

dsGreen for Real-Time PCR, 100×, 10 mL

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EUR 1042.8

dsGreen for Real-Time PCR, 100×, 1 mL

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EUR 298.8

Azura PureView 1 Kb DNA Ladder - 100 Lanes

AZ-1101 100 Lanes
EUR 140.4

Azura PureView 1 Kb DNA Ladder - 500 Lanes

AZ-1105 500 Lanes
EUR 277.2

Azura PureView 1 Kb DNA Ladder - 1000 Lanes

AZ-1105-2 1000 Lanes
EUR 326.4

Azura PureView 250bp DNA Ladder - 100 Lanes

AZ-1121 100 Lanes
EUR 140.4

Azura PureView 250bp DNA Ladder - 500 Lanes

AZ-1125 500 Lanes
EUR 277.2

Azura PureView 250bp DNA Ladder - 1000 Lanes

AZ-1125-2 1000 Lanes
EUR 326.4

Azura PureView 100bp DNA Ladder - 100 Lanes

AZ-1131 100 Lanes
EUR 140.4

Azura PureView 100bp DNA Ladder - 500 Lanes

AZ-1135 500 Lanes
EUR 277.2

Azura PureView 100bp DNA Ladder - 1000 Lanes

AZ-1135-2 1000 Lanes
EUR 326.4

Azura PureView 50bp DNA Ladder - 100 Lanes

AZ-1151 100 Lanes
EUR 140.4

Azura PureView 50bp DNA Ladder - 500 Lanes

AZ-1155 500 Lanes
EUR 277.2

Azura PureView 50bp DNA Ladder - 1000 Lanes

AZ-1155-2 1000 Lanes
EUR 326.4

AzuraView GreenFast qPCR Blue Mix Lo Rox - 200 Rxn

AZ-2301 200 Rxn
EUR 214.8

AzuraView GreenFast qPCR Blue Mix Lo Rox - 500 Rxn

AZ-2305 500 Rxn
EUR 384

AzuraView GreenFast qPCR Blue Mix Lo Rox - 2000 Rxn

AZ-2320 2000 Rxn
EUR 1195.2

AzuraView GreenFast qPCR Blue Mix Lo Rox - 5000 Rxn

AZ-2325 5000 Rxn
EUR 2817.6

AzuraView GreenFast qPCR Blue Mix Hi Rox - 200 Rxn

AZ-2401 200 Rxn
EUR 214.8

AzuraView GreenFast qPCR Blue Mix Hi Rox - 500 Rxn

AZ-2405 500 Rxn
EUR 384

AzuraView GreenFast qPCR Blue Mix Hi Rox - 2000 Rxn

AZ-2420 2000 Rxn
EUR 1195.2

AzuraView GreenFast qPCR Blue Mix Hi Rox - 5000 Rxn

AZ-2421 5000 Rxn
EUR 2817.6

Mouse Oxidative Stress Primer Library

MOSL-I 1 set
EUR 657.6

Mouse T-Cell Receptor Signaling Primer Library

MTCR-I 1 set
EUR 657.6

Mouse TGF Beta Signaling Primer Library

MTGFB-I 1 set
EUR 657.6

Mouse Tumor Invasion/Metastasis Primer Library

MTIM-I 1 set
EUR 540

Mouse Tumor Immunity Primer Library

MTIMU-I 1 set
EUR 657.6

Mouse p53 Signaling Primer Library

MTPS-I 1 set
EUR 540

Mouse WNT Signaling Primer Library

MWNT-I 1 set
EUR 657.6

Mouse Apoptosis Primer Library

MPA-I 1 set
EUR 540

Mouse Ras Signaling Primer Library

MRAS-I 1 set
EUR 657.6

Mouse Oncogene Primer Library

MONC-I 1 set
EUR 657.6

Mouse Integrin Signaling Primer Library

MINT-I 1 set
EUR 891.6

Mouse Jak/Stat Signaling Primer Library

MJAK-I 1 set
EUR 774

Mouse MAP Kinase Signaling Primer Library

MMAP-I 1 set
EUR 657.6

Mouse Myeloid Derived Suppressor Cell Primer Library

MMDSC-I 1 set
EUR 657.6

Mouse NFKappaB Primer Library

MNFKB-I 1 set
EUR 540

Mouse Notch Signaling Primer Library

MNOT-I 1 set
EUR 657.6

Mouse Neurotransmitter Signaling Primer Library

MNTS-I 1 set
EUR 657.6

Human T-Cell Anergy/Immune Tolerance Primer Library

HTAIT-I 1 set
EUR 657.6

Human T-Cell Receptor Signaling Primer Library

HTCR-I 1 set
EUR 657.6

Human T-Cell Development and Differentiation Primer Library

HTDD-I 1 set
EUR 657.6

Human TGF Beta Signaling Primer Library

HTGFB-I 1 set
EUR 657.6

Human Th1 and Th2 Cell Differentiation Primer Library

HTHD-I 1 set
EUR 657.6

Human Tumor Invasion/Metastasis Primer Library

HTIM-I 1 set
EUR 540

Human Tumor Immunity Primer Library

HTIMU-I 1 set
EUR 657.6

Human Toll-like Receptor Signaling Primer Library

HTLR-I 1 set
EUR 657.6

Human TNF Signaling Primer Library

HTNF-I 1 set
EUR 657.6

Human p53 Signaling Primer Library

HTPS-I 1 set
EUR 540

Human VEGF Signaling Primer Library

HVEGF-I 1 set
EUR 657.6

Human WNT Signaling Primer Library

HWNT-I 1 set
EUR 657.6

Human Cytoskeleton Primer Library

HSCK-I 1 set
EUR 774

Human Stem Cell Primer Library

HSCL-I 1 set
EUR 540

Human SMAD Signaling Primer Library

HSMAD-I 1 set
EUR 657.6

Human Statin Signaling Library

HSTAT-I 1 set
EUR 657.6

Human Signal Transduction Primer Library

HSTL-I 1 set
EUR 540

Human DNA Repair Primer Library I

HDRL-I 1 set
EUR 657.6

Human DNA Repair Primer Library II

HDRL-II 1 set
EUR 657.6

Human Drug Transporter I Primer Library

HDTP-I 1 set
EUR 657.6

Human Drug Detoxication I

HDTX-I 1 set
EUR 657.6

Human Drug Detoxication II

HDTX-II 1 set
EUR 774

Human Actin Cytoskeleton Signaling Primer Library

HACS-I 1 set
EUR 657.6

Human Adipogenesis Primer Library

HADG-I 1 set
EUR 657.6

Human Adaptive & Innate Immune Response Primer Library

HAIIR-I 1 set
EUR 657.6

Human PI3K-AKT Signaling Primer Library

HAKT-I 1 set
EUR 540

Human Amino Acid Metabolism Primer Library

HAMM-I 1 set
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Human Androgen Signaling Primer Library

HAND-I 1 set
EUR 657.6

Human Angiogenesis Primer Library

HAPL-I 1 set
EUR 540

Human Antigen Processing and Presentation Primer Library

HAPP-I 1 set
EUR 657.6

Human Atherosclerosis Primer Library

HATH-I 1 set
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Human Adherin - Tight Junction Primer Library

HATJ-I 1 set
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Human Autophagy Primer Library

HATPL-I 1 set
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Human Alzheimer's Disease Primer Library

HAZD-I 1 set
EUR 657.6

Human B-Cell Receptor Signaling Primer Library

HBCR-I 1 set
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