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Pus cells and red cells in the urine, but no bacterial growth on routine bacterial culture [1] Painless intermittent microscopic haematuria [1] A painless, non-tender, irregular, and sometimes fluctuating mass on one side of the scrotum. [1]
LAM antigen is a lipopolysaccharide present in mycobacterial cell walls, which is released from metabolically active or degenerating bacterial cells and appears to be present only in people with active TB disease. Urine-based testing have advantages over sputum-based testing because urine is easy to collect and store, and lacks the infection ...
Effective TB treatment is difficult, due to the unusual structure and chemical composition of the mycobacterial cell wall, which hinders the entry of drugs and makes many antibiotics ineffective. [137] Active TB is best treated with combinations of several antibiotics to reduce the risk of the bacteria developing antibiotic resistance. [14]
A negative dipstick test does not exclude bacteriuria, as not all bacteria which can colonise the urinary tract are nitrate-reducing. The leukocyte esterase test indirectly detects the presence of leukocytes (white blood cells) in urine which can be associated with a urinary tract infection. In the elderly, the leukocyte esterase test is often ...
The normal number of red blood cells in urine should not usually exceed 3 per high power field. [13] A urine test strip showing positive for blood can also indicate hemoglobinuria, which is not detectable using a microscope due to the lysis of red blood cells in the urinary tract (particularly in alkaline or dilute urine), or intravascular ...
Fujifilm SILVAMP TB LAM is a LAM based urine point-of-care test, using silver halide amplification technology. [16] Up to 60% of people with HIV are unable to produce a sputum sample, leading to delays in TB diagnosis for these patients, which often proves deadly. [ 17 ]
Mycobacterium tuberculosis (M. tb), also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. [1] [2] First discovered in 1882 by Robert Koch, M. tuberculosis has an unusual, waxy coating on its cell surface primarily due to the presence of mycolic acid.
The most common type of cast, hyaline casts are solidified Tamm–Horsfall mucoprotein secreted from the tubular epithelial cells of individual nephrons. Low urine flow, concentrated urine, or an acidic environment can contribute to the formation of hyaline casts, and as such, they may be seen in normal individuals in dehydration or vigorous exercise.