Phenylketonuria qualitative screening test
Phenylpyruvic acid reacts with trivalent iron ions to produce a blue color, interfering with the color development and causing a false-negative reaction of the
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Laboratory Protocols & SOPs Library
3,200+ step-by-step lab protocols and SOPs for cell culture, staining, PCR, protein work and microbiology, with reagents, conditions and evaluation criteria.
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Urinary Sediment Test Laboratory
Lab Notes: 1. The fresh pH value of urine should be below 6. 2, the examined urine SG in 1.026 or less, such as <1.016 for hypotonic urine easy to destroy
Cerebrospinal fluid total protein assay
Sulfosalicylic acid is an alkaloidal reagent that can precipitate proteins, but the ability to precipitate white Pr is stronger than ball Pr. After adding Na2SO
Cerebrospinal fluid total protein assay
Saturated ammonium sulfate can precipitate globular Pr. The content of globular Pr in normal cerebrospinal fluid is very low. Therefore, the positive result, if
Cerebrospinal fluid microscopy experiment
Cerebrospinal fluid (CSF) microscopy is used to count and categorize cerebrospinal fluid (CSF) cells to provide a basis for determining various diseases. This e
Plasmapheresis experiment
Exudate may contain a large amount of plasma membrane proteins (also known as acidic glycoproteins Pr) whose isoelectric point is between PH 3-5 and can produce
Semen microscopy experiment
After the semen bath is liquefied, take 1 drop of the mixed semen specimen on a clean slide with a coverslip, and then observe the presence of spermatozoa and t
occult blood test (medicine)
Ferrous hemoglobin in o-toluidine zone method hemoglobin has peroxide E-like activity. It can catalyze H2O2 to release the new ecological O2 to oxidize the rece
Determination of fructose in seminal plasma
The fructose of seminal plasma is co-cooled with resorcinol in an acidic environment at 90℃ to produce a red compound, the color of which is directly proportio