"D-Lactate" Related Products

      D-Lactate Assay Kit

      Cat.No. : Kit-0872
      Description : Glyoxalase II converts S-D-Lactoylglutathione and water into D-Lactate from the glyoxalase system pathway. The normal serum concentrations in mammals of D-Lactate are relatively low ranging in the nano to micromolar level. However during a bacterial infection in humans the serum concentration can rise to the millimolar range. High concentrations of D-lactate are indicative of ischemia, trauma or sepsis. The D-Lactate Assay Kit is based on the specifically oxidized D-lactate by D-Lactate dehydrogenase which exhibits an absorbance maximum at 490 nm. The intensity of the absorbance is proportional to the lactate concentration. Using a set of lactate standards, the assay can measure the concentration of lactate in samples (plasma, medium, or others) in a quantitative manner. The kit is stable until the expiration date of under proper storage and handling conditions. The product is for research only.
      Applications : For biological research: D-Lactate measurement in biological samples
      For drug/pharm research: Drug influence on D-Lactate metabolism
      Storage : at -80°C
      Shipping : Icepacks
      Materials Required but Not Supplied : A plate reader capable of measuring absorbance between 470-490nm
      Adjustable pipettes and a repeat pipettor
      A source of pure water; glass distilled water of HPLC-grade water is sufficient
      0.5M Acetic Acid
      Clear flat bottom 96-well plates if not included in the kit purchased
      Detection method : Colorimetric method at 490nm
      Compatible Sample Types : Plasma,Serum,Cell culture supernatant, other body fluid
      Preparation : 1. D-Lactate Standards
      The vial contains 1ml of 3mM D-Lactate Standard. The standard must be equilibrated to room temperature before use. 1ml of the standard is enough for making 3 standard curves if assayed in duplicate. Store at -80˚C.
      2. D-Lactate Assay Solution
      The solution contains enzymes that are light sensitive. The solution must be thawed on ice before use.Best to aliquot the amount needed and use it all to prevent thawing/freezing cycles. Freeze and store aliquots at -80 centigrade.
      Assay Protocol : 1. Sample Preparation
      Serum/Plasma/other body fluid/cell culture supernatant
      Serum, Plasma, other body fluid, or cell culture supernatant can be measured directly by a series of dilutions of the sample (1/2; 1/4; 1/8; .…..) to ensure the readings are within the standard curve.
      Your samples can be diluted with dH2O.
      Note: if samples (such as hemolyzed serum/plasma or cell culture medium which contain FBS) contain high level of lactate dehydrogenase capable of converting lactate to pyruvate, it is important for the samples to be deproteinated.
      Solid Samples
      Solid samples, such as tissues, can be first homogenized and extracted with ethanol (80%) with a tissues/Ethanol ratio of 1:8 (1 hr at 4°C) followed by centrifugation at 10,000xg. The clear supernatants then can be measured directly by a series of dilutions of the sample (1/2; 1/4; 1/8; .…..) to ensure the readings are within the standard curve. Your samples can be diluted with dH2O.
      Adding Samples
      Add 50μl of samples to each well.
      We recommend that samples be assayed in duplicate.
      Assay time : 30 minutes
      Analysis : D-Lactate(µM)= [ (Corrected absorbance)-(y-intercept)]/slope
      Sensitivity : 60µM-3000µM

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