Total Protein Determination in Urine: Aminoglycoside Interference

Positive interference in Radioimmunoassay determination of serum total T3

Introduction: Determination of thyrotropin, total and free thyroxine and triiodothyronine are widely used as diagnostic methods for thyroid function evaluation. There have been numerous reports of interferences in thyroid hormone immunoassays. Herein, a prominent positive interference is reported for a radioimmunoassay kit of total triiodothyronine. Materials and Methods: In this study, a total...

Letter: Ethchlorvynol interference with oxidimetric determination of ethanol in urine.

Gas-chromatographic methods for ethanol quantitation provide greater specificity than traditional oxidimetric methods. The specificity of oxidimetric methods such as those of Kozelka-Hine (1) and Widmark (2) rely on the arguments that: (a) the sample came from a living person and (b) drugs or chemicals that would appreciably react with potassium dichromate could not be expected to be present in...

positive interference in radioimmunoassay determination of serum total t3

introduction: determination of thyrotropin, total and free thyroxine and triiodothyronine are widely used as diagnostic methods for thyroid function evaluation. there have been numerous reports of interferences in thyroid hormone immunoassays. herein, a prominent positive interference is reported for a radioimmunoassay kit of total triiodothyronine. materials and methods: in this study, a total...

Determination of total iodine in urine, stool, diets, and tissue.

13ETIiRMINATION of total iodine in various materials has become of increasing interest, especially in nutritional studies. Several methods are available for such determination. Many of them have been principally concerned with the protein-bound iodine fraction in serum (1, 2). Other methods for iodine determination have appeared from time to time. Mathews et al. (3) have proposed a method which...

The Determination of the Total Neutral 17-Ketosteroids in Urine.