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Sulfonamides are bacteriostatic antimicrobial agents that compete with folic acid synthesis in bacteria. Common sulfonamides, or sulfa drugs, used in food producing animals include, sulfadimethoxine, sulfamethazine, sulfachlorpyridazine, sulfathiazole, sulfadoxine, sulfadiazine and sulfaquinoxaline. Sulfa drugs are known to provoke allergic reactions in humans, and in the case of sulfamethazine, toxicity studies have shown follicular cell adenomas in mice.
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The Charm Sulfa Test is the first lateral flow strip test to detect all members of the sulfonamide family of drugs in milk.
Sulfonamides (sulfa drugs) are commonly used antibiotics on dairy farms to treat bacterial infections. Because of their toxicity and ability to provoke allergic reactions in humans, sulfonamides are primarily used for non-lactating animals.
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ROSA Sulfamethazine & Sulfadimethoxine (SMSD) Test for raw commingled milk lets you increase the amount of milk you can send to market by giving you the flexibility to safely clear cows days earlier than you would without testing.
The rate of metabolism of drugs varies between cows and during different seasons. By using the ROSA SMSD test you can check cows early, discard only milk that is positive and reduce the risk of contaminated milk getting into the bulk tank.
Use the ROSA SMSD test to save money and milk by screening milk from:
• Heifers that were treated pre-partum with an antibiotic
• Cows recently freshened after a shorter than anticipated dry period
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The ROSA Sulfamethazine Test matches the sulfamethazine detection of the NCIMS approved Charm II Sulfa Test, Competitive Assay (M-a-85). Charm ROSA Test for Sulfamethazine is ideal for screening milk tanker trucks or farm bulk tanks.
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The Charm II Sulfa Drug Test (competitive assay) is an FDA-approved screening/regulatory test acceptable for the detection of Sulfamethazine, Sulfadiazine, Sulfadimethoxine, and Sulfathiazole.
(IMS-a-33)
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Charm has the only B.st Disc Assay officially approved for bulk tank milk.
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The Charm CowSide® II Test is a microbial inhibition assay that detects inhibitors in milk.
The CowSide II consists of a single service vial that contains pre-measured bacterial spores, media and a pH indicator.
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The Charm Blue Yellow II Test is a microbial inhibition assay, which detects inhibitors in milk. The test consists of a single service well that contains pre-measured bacterial spores,* media, and a pH indicator.
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The Kidney Inhibition Swab (KIS) is a simple to use inhibition test for screening broad-spectrum antimicrobial drugs in fresh or thawed kidney tissue.
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Antibiotic Tests 
