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Urine test strips and iodine contamination: a tricky trick in iodine nutrition surveys.
Scand J Clin Lab Invest
May 2022
Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
Article Synopsis
- A recent study in the Faroe Islands indicated mild iodine deficiency in women over 40, but preliminary results showed a surprisingly high average urinary iodine concentration of 457 µg/L, prompting further investigation.
- The study involved collecting urine and tap water samples from pregnant women, analyzing iodine levels, and examining the impact of iodine-rich food intake on urinary iodine concentration.
- Results revealed that urine samples can become contaminated quickly from test strips, leading to unreliable iodine measurements, highlighting the need for strict sample handling protocols in iodine research.
Validity and interobserver agreement of reagent strips for measurement of glucosuria.
Scand J Clin Lab Invest
May 2011
Princess Amalia Department of Pediatrics, Isala Clinics, Zwolle, the Netherlands.
Background: Measurement of glucosuria by means of a visually readable reagent test strip is frequently used in a wide variety of clinical settings. The aim of this study was to evaluate the validity and reliability of this semi-quantitative measurement of glucosuria compared to laboratory measurements of glucose concentrations in urine.
Methods: Reagent test strips (Combur³Test® Roche) from 375 artificially supplemented samples of urine, covering a wide range of glucose concentrations, were independently read by three different observers.
[Microalbuminuria and urinary albumin excretion: French guidelines].
Ann Biol Clin (Paris)
September 2008
Service de néphrologie-immunologie clinique, CHU de Tours, France.
Unlabelled: Measurement of urinary albumin excretion (UAE) may be done on a morning urinary sample or on a 24 hour-urine sample. Values defining microalbuminuria are: - 24-hour urine sample: 30-300 mg/24 hours - Morning urine sample: 20-200 mg/mL or 30-300 mg/g creatinine or 2.5-25 mg/mmol creatinine (men) or 3.
View Article and Find Full Text PDF[Microalbuminuria and urinary albumin excretion: clinical practice guidelines].
Nephrol Ther
October 2007
Service de néphrologie-immunologie clinique, CHU de Tours, 37044 Tours cedex, France.
Unlabelled: Measurement of urinary albumin excretion (UAE) may be done on a morning urinary sample or on a 24 hours-urine sample. Values defining microalbuminuria are: 24 hour-urine sample: 30-300 mg/24 hours; morning urine sample: 20-200 mg/ml or 30-300 mg/g creatinine or 2.5-25 mg/mmol creatinine (men) or 3.
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