MacConkey agar is selective for Gram-negative bacteria and can differentiate lactose fermenters from non-fermenters based on color change. Urine samples typically contain a mixture of bacteria, including potential pathogens that might be inhibited on other media. Inoculating MacConkey agar allows for the isolation and identification of Gram-negative bacteria, particularly Enterobacteriaceae, which are common urinary tract pathogens.
Random urine sample First morning urine sample Midstream clean-catch urine sample 24-hour urine collection Timed urine sample Postprandial urine sample Suprapubic aspiration specimen Catheterized urine specimen Pediatric urine bag specimen
Urine specimens are inoculated on CLED (cysteine lactose electrolyte deficient) agar because this medium supports the growth of most urinary pathogens while inhibiting the growth of normal urinary flora. It allows for the differentiation of different bacterial species based on colony characteristics and lactose fermentation. CLED agar is also able to identify the presence of UTI-causing organisms such as E. coli, Proteus, and Enterococcus.
A random urine specimen is a urine sample collected at any time without following a specific time schedule or fasting requirement. This type of specimen is commonly used for routine screenings or as a general sample to check for various medical conditions.
yes, example of urine culture and sensitivity.
To collect a urine specimen from an indwelling catheter, first ensure proper hand hygiene and gather necessary supplies. Use a sterile syringe to aspirate urine from the catheter port, avoiding contamination. Transfer the specimen to a sterile container and label it with patient information before sending it to the lab for analysis.
Most of the bacterial commensalism from our large intestine is lactose fermenting, Escherichia coli being one of them. When bacterial growths and colonies on MacConkey agar is pink coloured, then the organism is fermenting lactose from the medium, on the other hand, if transparent, colourless growths and colonies appear on the medium, the bacterium does not ferment lactose.The flushing action of urine, make it sterile in an uninfected healthy person. In an event where the patient is suspected to have urinary tract infection (UTI), urine of patient is inoculated on MacConkey agar medium and incubated at 37 degree centigrade overnight. In most of the cases, UTI is caused by Escherichia coli that is lactose fermenting and produces pink coloured colonies on MacConkey agar medium. Although the urine is sterile, it may get contaminated by the organisms of skin microflora or by surrounding microbes due to improper collection of urine.
MacConkey agar medium differentiates between the lactose fermenting and nonlactose fermenting bacteria. Most of the bacterial commensals from our large intestine are lactose fermenting, Escherichia coli being one of them. When bacterial growths and colonies on MacConkey agar is pink coloured, then the organism is fermenting lactose from the medium, on the other hand, if transparent/transluscent, colourless growths and colonies appear on the medium, the bacterium does not ferment lactose. The flushing action of urine, make it sterile in an uninfected healthy person. In an event where the patient is suspected to have urinary tract infection (UTI), urine of patient is inoculated on MacConkey agar medium and incubated at 37 degree centigrade overnight. In most of the cases, UTI is caused by Escherichia coli that is lactose fermenting and produces pink coloured colonies on MacConkey agar medium. Although the urine is sterile, it may get contaminated by the organisms of skin microflora or by surrounding microbes due to improper collection of urine. In such cases, UTI is diagnosed by counting bacteria in urine sample. For significant bacteriuria (bacteria in urine), the count must be equal to or more than 1 lack bacteria per mL of urine. Answered by: M. F. Khan, Dept. of Microbiology, GMC, jagdalpur (CG)
Random urine sample First morning urine sample Midstream clean-catch urine sample 24-hour urine collection Timed urine sample Postprandial urine sample Suprapubic aspiration specimen Catheterized urine specimen Pediatric urine bag specimen
Urine specimens are inoculated on CLED (cysteine lactose electrolyte deficient) agar because this medium supports the growth of most urinary pathogens while inhibiting the growth of normal urinary flora. It allows for the differentiation of different bacterial species based on colony characteristics and lactose fermentation. CLED agar is also able to identify the presence of UTI-causing organisms such as E. coli, Proteus, and Enterococcus.
Typically midstream urine is taken as a urinary specimen, when you have urinary tract infection. It is good precaution to scrub the genital area with some mild soap like glycerin soap, before you take the urine specimen.
A "cath spec" is a catheterized urine specimen. Most urine specimens are voided specimens when the patient attempt to collect the urine while voiding. The risk of contaminating a voided specimen, with skin bacteria, is high even when the patient is careful. Therefore, a catheterized urine specimen is considered a reliable urine sample.
A random urine specimen is a urine sample collected at any time without following a specific time schedule or fasting requirement. This type of specimen is commonly used for routine screenings or as a general sample to check for various medical conditions.
yes, example of urine culture and sensitivity.
Using a standardized Urinalysis System
Genetic testing does not require a urine specimen.
Observation of the color, appearence, and any distinctive odor from the specimen
nope