{"product_id":"201-3179-000-abbott-tdx-glass-cuvette","title":"3.4 mL Glass Cuvettes, Borosilicate Glass, Natural, Abbott® Compatible — 201-3179-000 | 200\/Box | Caplugs® Evergreen","description":"\u003ch2\u003e3.4 mL Round Borosilicate Glass Cuvettes — Abbott® TDx \u0026amp; TDxFLx Compatible, 200\/Box\u003c\/h2\u003e\n\u003cp\u003eThese 3.4 mL round borosilicate glass cuvettes are precision-dimensioned for the Abbott® TDx fluorescence polarization immunoassay (FPIA) analyzer and its TDxFLx successor, supplied non-sterile in a 200\/Box format that matches standard TDx rack-loading. Manufactured in a U.S. facility to tight outer-diameter and wall-thickness tolerances, each lot is coded for full traceability — a critical requirement for clinical laboratories that depend on consistent optical-path geometry to maintain low coefficients of variation in therapeutic drug monitoring assays. As OEM TDx consumable supply becomes increasingly constrained, part number 201-3179-000 offers a dimensionally consistent, borosilicate-correct replacement for labs that cannot afford assay drift.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e201-3179-000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e3.4 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeometry\u003c\/td\u003e\n\u003ctd\u003eRound (TDx optical-path format)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBorosilicate Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e200\/Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLot Traceability\u003c\/td\u003e\n\u003ctd\u003eLot-coded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTherapeutic drug monitoring (TDM) on the Abbott® TDx and TDxFLx platforms — cyclosporine, tacrolimus, aminoglycosides, vancomycin, anticonvulsants, and digoxin assays\u003c\/li\u003e\n\u003cli\u003eFluorescence polarization immunoassay (FPIA) measurements where negligible autofluorescence and a precisely defined optical path are required\u003c\/li\u003e\n\u003cli\u003eClinical immunoassay laboratories maintaining active TDx or TDxFLx instruments as primary or backup analyzers\u003c\/li\u003e\n\u003cli\u003eResearch applications using homogeneous FPIA systems where borosilicate optical clarity is specified — verify optical path dimensions prior to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThese cuvettes are dimensioned as a direct OEM-replacement format for the Abbott® TDx analyzer across all generations, and the TDxFLx platform shares the same cuvette geometry, making them a confirmed fit for both instruments. The round-profile borosilicate body presents the correct optical path to the polarized excitation beam and emission detector required for FPIA measurements; substituting plastic or incorrectly dimensioned cuvettes introduces fluorescent background and path-length error that elevates assay CVs and can compromise reportable results. Laboratories operating either TDx or TDxFLx platforms should confirm rack compatibility with their specific instrument configuration when transitioning from OEM supply.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Sample Type\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSaline and aqueous buffers\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDx aqueous\/alcohol-based reagent matrix\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases (clinical concentrations)\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerum and plasma\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentrated hydrofluoric acid\u003c\/td\u003e\n\u003ctd\u003eNot recommended — attacks borosilicate glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrong concentrated alkalis\u003c\/td\u003e\n\u003ctd\u003eLimited — minimize prolonged contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these Caplugs® Evergreen cuvettes are produced to tight dimensional tolerances under rigorous quality controls, lot-coded for full traceability from manufacture through patient report. Borosilicate glass construction eliminates the leachable and extractable risk associated with plastic alternatives — even trace resin additives can produce fluorescent background that compromises FPIA assay performance. The material contains no BPA or phthalates. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory; volume pricing and written quotes are available for institutional, academic, and grant-funded accounts placing multi-box standing orders. Given tightening OEM supply for Abbott TDx consumables, clinical laboratories actively running TDM panels are encouraged to maintain a minimum six-month inventory buffer.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhy must these cuvettes be borosilicate glass rather than plastic?\u003c\/strong\u003e\u003cbr\u003eThe Abbott® TDx measures fluorescence polarization, which requires negligible background fluorescence from the cuvette itself. Even trace concentrations of plastic resin additives (stabilizers, processing aids) produce autofluorescence that elevates assay CVs and can shift results outside acceptable ranges. Borosilicate glass is optically transparent at TDx excitation and emission wavelengths and is chemically inert to the aqueous\/alcohol TDx reagent matrix, making it the only suitable cuvette material for this platform.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these cuvettes compatible with the TDxFLx as well as the original TDx?\u003c\/strong\u003e\u003cbr\u003eYes — the TDxFLx shares the same cuvette geometry as the original TDx, so these cuvettes are a confirmed fit for both instrument generations. If your laboratory operates other FPIA research systems, verify optical path dimensions against your instrument's specifications before use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre these cuvettes sterile, and do they require any pre-treatment before loading?\u003c\/strong\u003e\u003cbr\u003eThese cuvettes are supplied non-sterile, consistent with standard practice for clinical chemistry cuvettes used in closed-system analyzers. No additional pre-treatment is required for routine TDx or TDxFLx operation; follow your laboratory's standard instrument preparation and quality control procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow should we manage inventory given constrained OEM TDx consumable supply?\u003c\/strong\u003e\u003cbr\u003eBecause Abbott® TDx OEM consumable availability has become increasingly limited, laboratories actively running therapeutic drug monitoring panels are advised to maintain at least a six-month buffer stock. LabSupplies.com offers volume pricing and standing-order quotes to help procurement managers plan ahead — contact our team for institutional pricing details.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"3.4 mL Round Borosilicate Glass Cuvettes, Abbott® TDx \u0026 TDxFLx Compatible — Natural, 200\/Box\",\"sku\":\"2013179000E1\",\"mpn\":\"201-3179-000\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Borosilicate Glass\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"181.72\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Why must these cuvettes be borosilicate glass rather than plastic?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Abbott® TDx measures fluorescence polarization, which requires negligible background fluorescence from the cuvette itself. 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