125Iodine-iothalamate clearance in children. A simple method to measure glomerular filtration

Geeta Bajaj, Steven R. Alexander, Richard Browne, Abdullah Sakarcan, Mouin G. Seikaly

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Glomerular filtration rate (GFR) is the most widely used test to evaluate renal function. Several clearance markers have been used to measure GFR in adults. In children, however, a simple and reliable method to measure GFR is not available. Renal 125iodine (I)-iothalamate clearance, after a single subcutaneous injection, is a simple and accurate test to measure GFR in adults. The validity of unlabelled iothalamate, as a marker for measurement of GFR in children, was reported recently. Unfortunately, the unlabelled iothalamate assay is arduous. We report our experience with a single subcutaneous injection of 125I-iothalamate to measure GFR in normal children and those with renal disease. A weight-adjusted dosing regimen was adopted. This regimen resulted in sufficient above-background radioactivity in both blood and urine for reproducible measurement of GFR. Intra-test variability for GFR was not affected by the degree of renal insufficiency. The test was well tolerated with only 2 patients developing mild headache during the procedure. Our study showed that renal clearance of 125I-iothalamate is reproducible, simple, and practical in healthy children and those with mild and advanced renal disease.

Original languageEnglish (US)
Pages (from-to)25-28
Number of pages4
JournalPediatric Nephrology
Volume10
Issue number1
StatePublished - Feb 1996

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Iothalamic Acid
Glomerular Filtration Rate
Kidney
Subcutaneous Injections
Radioactivity
Renal Insufficiency
Headache
Urine
Weights and Measures

Keywords

  • Iodine-iothalamate clearance
  • Glomerular filtration rate

ASJC Scopus subject areas

  • Nephrology
  • Pediatrics, Perinatology, and Child Health

Cite this

125Iodine-iothalamate clearance in children. A simple method to measure glomerular filtration. / Bajaj, Geeta; Alexander, Steven R.; Browne, Richard; Sakarcan, Abdullah; Seikaly, Mouin G.

In: Pediatric Nephrology, Vol. 10, No. 1, 02.1996, p. 25-28.

Research output: Contribution to journalArticle

Bajaj, G, Alexander, SR, Browne, R, Sakarcan, A & Seikaly, MG 1996, '125Iodine-iothalamate clearance in children. A simple method to measure glomerular filtration', Pediatric Nephrology, vol. 10, no. 1, pp. 25-28.
Bajaj, Geeta ; Alexander, Steven R. ; Browne, Richard ; Sakarcan, Abdullah ; Seikaly, Mouin G. / 125Iodine-iothalamate clearance in children. A simple method to measure glomerular filtration. In: Pediatric Nephrology. 1996 ; Vol. 10, No. 1. pp. 25-28.
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