Pathology Handbook

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Iodine Urine 24hr (Sendaway Test)

Alternative Names:

Urine Iodine Excretion (24hr)

Laboratory:

Clinical Biochemistry

Test Code:

UIO

Medicare rebatable:

Yes

Specimen Types:

Urine 24 hour

Container Types:

Urine Bottle PLAIN

Transport Instructions:

Room Temperature

Processing Instructions:

Aliquot
Store at 4'C

Assay Frequency:

Weekly

External Laboratory:

The Alfred Pathology Service (APS)

External Laboratory details...

External Transport Instructions:

Send at 4'C with Ice Pack

Additional Notes:

Reference Intervals:

Adults: 0.2-5.0 umol/L

Children (under 18yo): 0.3-6.0 umol/L

Note: that Iodine concentration is a marker of recent intake and does not necessarily confirm insufficiency

WHO recommends urine iodine concentrations of 100-200 ug/L which is equivalent to 0.79-1.58 umol/L

(Ref: WHO. Urinary iodine concentrations for determining iodine status deficiency in populations. Vitamin and Mineral Nutrition Information System. Geneva: World Health Organization; 2013 (http://www.who.int/nutrition/vmnis/
indicators/urinaryiodine, accessed 23/2/16).)

In pregnancy, urinary iodine concentrations of 1.2 - 2 umol/L (150 -249 ug/L) indicate adequate iodine intake(1).

1. WHO. Urinary iodine concentrations for determining iodine status deficiency in populations. Vitamin and Mineral Nutrition Information System. Geneva: World Health Organisations; 2013 (http://www.who.int/nutrition/vmnis/indicators/urinaryiodine)

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