Highly Sensitive Molecular Assay for Group A Streptococci Over-identifies Carriers and May Impact Outpatient Antimicrobial Stewardship.
Authors of this article are:
Tanz RR, Ranniger EJ, Rippe JL, Dietz RL, Oktem CL, Lowmiller CL, Shulman ST.
A summary of the article is shown below:
BACKGROUND: Timely, accurate diagnosis of group A streptococci (GAS) pharyngitis prevents acute rheumatic fever and limits antibiotic overuse. The illumigene group A Streptococcus assay (Meridian Bioscience, Cincinnati, OH) is a molecular test for GAS pharyngitis with high sensitivity and specificity. We sought to determine whether the illumigene test is more likely than throat culture to be positive in patients without pharyngeal symptoms and explore the limits of detection of the test.METHODS: Patients 3-17 years of age were eligible if they had no history of pharyngitis or use of antibiotics within the previous 2 weeks; there were no upper respiratory infection symptoms, sore throat or fever and no signs of infection. Culture and illumigene were performed on duplicate throat swabs. Excess lysate from a subset of illumigene tests was evaluated by real-time polymerase chain reaction. Institutional Review Board approval was obtained.RESULTS: We enrolled 385 patients from February 2016 to October 2017; mean age was 10 yr; 51% were male. Most visits were for health supervision (69%). Significantly more illumigene tests (78/385, 20.3%) than throat cultures (48/385, 12.5%) were positive (χ; P =0.0035). Illumigene was “indeterminate” for 3 patients, leaving 382 pairs of swabs for analysis. Results were discordant for 32 of 382 pairs (8.4%); 31 of 32 (97%) were illumigene-positive/culture-negative (McNemar test; P < 0.000001). Real-time polymerase chain reaction was negative in 4 of 13 (31%) tested illumigene-positive lysates; the paired culture had been negative in all four. The limit of detection for the illumigene test was 55 colony forming units/mL.CONCLUSIONS: The illumigene test is significantly more likely than throat culture to yield positive results in patients without GAS pharyngitis. Failure to appropriately select patients for testing may negatively impact antimicrobial stewardship efforts without benefit to patients.
Check out the article’s website on Pubmed for more information:
This article is a good source of information and a good way to become familiar with topics such as: n/a.
New Chemicals from MOLECULAR DEPOT
-
- Sale!
- Chemicals, Interference, Lipids
Triglyceride Mix for Interference Testing
- Original price was: $495.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Chemicals
Microparticle Stabilizer Solution
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Enzyme Acceptor Stabilization Buffer
- Original price was: $495.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Enzyme Donor Stabilization Buffer
- Original price was: $495.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Chemicals, Conjugates
Progesterone Biotin Conjugate Solution
- Original price was: $650.00.$350.00Current price is: $350.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Activation Buffer
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Washing Buffer
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Blocking Buffer
- Original price was: $650.00.$350.00Current price is: $350.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, Chemicals
Microparticle Anti Aggregation Agent
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Chemicals
CPRG (Chlorophenol red-β-D-galactopyranoside)
- Original price was: $850.00.$395.00Current price is: $395.00.
- Add to cart
New Proteins from MOLECULAR DEPOT
-
- Sale!
- Conjugates, Proteins
Tacrolimus BSA Conjugate Solution
- Original price was: $695.00.$495.00Current price is: $495.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Cholesterol Oxidase from Streptomyces sp.
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Proteins
Aprotinin from Bovine Lung (Lyophilized powder)
- Original price was: $450.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Beta-galactosidase Enzyme Donor
- Original price was: $795.00.$450.00Current price is: $450.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Beta-galactosidase Enzyme Acceptor
- Original price was: $795.00.$375.00Current price is: $375.00.
- Add to cart
-
- Sale!
- Proteins, Enzymes
Xanthine Oxidase Grade II (Lyophilized Powder)
- Original price was: $695.00.$395.00Current price is: $395.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Ascorbate Oxidase (Lyophilized Powder)
- Original price was: $350.00.$250.00Current price is: $250.00.
- Add to cart
-
- Sale!
- Proteins
Silk Fibroin (Bombyx Mori Silkworm)
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Proteins
Fibrinogen from Bovine Plasma Lyophilized
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Enzymes, Proteins
Horseradish Peroxidase Biotinylated
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
New Antibodies from MOLECULAR DEPOT
-
- Sale!
- Antibodies
Antibody to Thyroxine T4 Monoclonal
- Original price was: $995.00.$495.00Current price is: $495.00.
- Add to cart
-
- Antibodies
SAA Antibody Monoclonal Anti-Serum Amyloid A
- $350.00 – $1,550.00
- Select options
-
- Antibodies
Valproic Acid Antibody (Mouse Monoclonal)
- $250.00 – $1,095.00
- Select options
-
- Antibodies
Phenytoin Antibody (Mouse Monoclonal)
- $350.00 – $1,450.00
- Select options
-
- Sale!
- Antibodies
Anti Sheep IgG (H+L) Rabbit Polyclonal
- $250.00 – $1,495.00
- Select options
-
- Sale!
- Antibodies
Anti Human IgM Antibody Polyclonal
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Antibodies
Myoglobin Antibody (Human Affinity Purified)
- Original price was: $650.00.$350.00Current price is: $350.00.
- Add to cart
-
- Sale!
- Antibodies, Interference
Rheumatoid Factor Interference Blocker
- Original price was: $595.00.$395.00Current price is: $395.00.
- Add to cart
-
- Sale!
- Antibodies, Interference
HAMA Blocking Reagent (Affinity Purified)
- Original price was: $895.00.$450.00Current price is: $450.00.
- Add to cart
New Research Kits from MOLECULAR DEPOT
-
- Sale!
- Interference, Research Kits
Interference Test Kit
- Original price was: $595.00.$395.00Current price is: $395.00.
- Add to cart
-
- Sale!
- Research Kits
Alpha Complementation Kit Beta-galactosidase
- Original price was: $1,395.00.$695.00Current price is: $695.00.
- Add to cart
-
- Sale!
- Research Kits
Crystallization Screen for Protein-DNA Complexes
- Original price was: $1,295.00.$650.00Current price is: $650.00.
- Add to cart
-
- Sale!
- Molecular Biology, Research Kits
NativeFolder Bacterial Culture Medium
- $350.00 – $19,500.00
- Select options
-
- Sale!
- Research Kits
CycloScreen: Cyclodextrins Kit for Screening
- Original price was: $595.00.$295.00Current price is: $295.00.
- Add to cart
-
- Sale!
- Research Kits
NativePro Bradford Protein Assay Kit (Automated)
- Original price was: $995.00.$495.00Current price is: $495.00.
- Add to cart
-
- Sale!
- Interference, Research Kits
Rheumatoid Factor Interference Kit
- Original price was: $1,495.00.$695.00Current price is: $695.00.
- Add to cart
-
- Sale!
- Interference, Research Kits
Interference Test Kit EXTRA
- Original price was: $795.00.$495.00Current price is: $495.00.
- Add to cart
-
- Sale!
- Interference, Research Kits
HAMA Interference Kit
- Original price was: $895.00.$595.00Current price is: $595.00.
- Add to cart
-
- Sale!
- Buffers & Solutions, ELISA, Research Kits
ELISA Microplate Production Kit
- Original price was: $795.00.$495.00Current price is: $495.00.
- Add to cart