Ultrasonography is an accurate and accessible method for detecting polycystic kidney disease (PKD), an inherited autosomal dominant disease, and other urinary tract diseases. The present work is a preliminary study of PKD and urinary tract abnormalities using ultrasonography in Persian and other long hair cats in Iran. This study was conducted on 83 cats including 68 Persian cats and 15 Persian...

Psychotropic, ring-substituted amphetamine derivatives can be differentiated from each other and from over-the-counter drugs using a sequential TLC detection technique. The improved detection is accomplished by distinct differences in color through four detection stages. Reported in the tables are Rf values in two solvent systems, the color characteristics through the four detection stages and ...

AIM Urine concentration measured via osmolality (U OSM) and specific gravity (U SG) reflects the adequacy of daily fluid intake, which has important relationships to health in pregnant (PREG) and lactating (LACT) women. Urine color (U COL) may be a practical, surrogate marker for whole-body hydration status. PURPOSE To determine whether U COL was a valid measure of urine concentration in PREG...

It is difficult to describe hydration status and hydration extremes because fluid intakes and excretion patterns of free-living individuals are poorly documented and regulation of human water balance is complex and dynamic. This investigation provided reference values for euhydration (i.e., body mass, daily fluid intake, serum osmolality; M +/- SD); it also compared urinary indices in initial m...

A urine sample submitted for a urinary calcium-to-creatinine ratio was visually clear but deep orange in color (Fig. 1, left). Acidification of the sample to pH 2.0 with HCl prior to analysis produced a color change in the sample from orange to deep red (Fig. 1, right). The 16-year-old female patient had a history of polycystic ovarian syndrome, oligomenorrhea, and vitamin D deficiency and a su...

The aim of this study was to compare daily hydration profiles of competitive adolescent swimmers and less active maturation- and sex-matched controls. Hydration profiles of 35 competitive adolescent swimmers (male n = 18, female n = 17) and 41 controls (male n = 29, female n = 12) were monitored on 4 consecutive days. First morning hydration status was determined independently by urine specific...

THE USUAL METHOD of peptide estimation requires the assay of a protein-free filtrate for amino-acid concentration before and after hydrolysis. Peptide amino acid is then calculated by difference (1). In another method (2) specifically designed for urine, the peptides are precipitated with phosphotungstic acid from a trichloroacetic acid filtrate. The precipitate is dissolved and color is formed...

The use of the starch-iodine color for the estimation of ar-amylase appears to be on a sound theoretical basis. Swanson (1) has shown that in the degradation of amylose by a-amylase there is a random attack by the enzyme upon the polysaccharide chain yielding hexose units of varying lengths. Swanson (2) has further observed that chains 4 to 6 glucose units in length give no color with iodine, c...

The use of the starch-iodine color for the estimation of ar-amylase appears to be on a sound theoretical basis. Swanson (1) has shown that in the degradation of amylose by a-amylase there is a random attack by the enzyme upon the polysaccharide chain yielding hexose units of varying lengths. Swanson (2) has further observed that chains 4 to 6 glucose units in length give no color with iodine, c...

In the course of conducting an analysis in a subset of the controlled antenatal thyroid screening study (1) samples, we recently noted that some urine samples from pregnant women in Wales, a region known to be iodine deficient, had urinary iodine concentrations in excess of 500mg=L. We suspected contamination from urine test strips. We obtained Combur Test D urine test strips (Roche Diagnostics...