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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Fecal direct smear assay
1, clean slides with isotonic saline for 1-2 d, selecting abnormal parts of the feces, or selecting different parts of the feces to be directly smeared. 2. It
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
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
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
Experimental determination of fecal fertilizers by boiling with high mercury chloride
If fecal urocholine (fecal cholestrol) is present in the feces, add high mercury chloride to produce a red color compound. This experiment is derived from the M
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 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
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