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Metanephrine Urine 24 Hour

Ordering Info & Methodology

Test Code

Cerner Synonyms


Metanephrine Urine Quantitative, Metanephrines, 24h Urine, Normetanephrine

Turn Around Time


Ordering Guide


Specimen Requirements

Sample Type

Collection Container

Alternate Collection Containers


Urine collection bottle containing 15mL of 6N HCl

If not collected in acid, acidify in lab, to pH 2 - 4, only if entire collection is received. Acidification must be performed within 12 hours after completion of 24 hr urine collection.

Add on stability
This is the length of time after sample collection that this analyte is stable. Test can be added to a previously collected sample if the time since collection is less than the add on stability time.

Minimum Volume

Add On Stability

Collection and Shipping Requirements

Aliquot 50 mL of a well mixed 24hr collection, refrigerate, send on ice pack.

Reference Intervals

Female Reference Interval

Age Category
Reference Interval

Male Reference Interval

Age Category
Reference Interval
Additional Notes

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Measurement Uncertainty (MU)
Every laboratory value is an estimate of the true concentration of substance. MU is the 95% confidence interval around that estimate. 95% of the time, the true concentration will be within the range of the reported value ±MU. This value is based on analytical variability (precision) and does not reflect other factors such as sample collection and handling which may also affect the result.


Reported sodium = 140 mmol/L
Sodium MU = 1%
Expanded uncertainty = 140 mmol/L ± 1% or 140mmol/L ± 1.4 mmol/L
Interpretation - the true value of sodium in the sample is in the range 138.6-141.4 mmol/L, with 95% confidence.

Measurement Uncertainty

Urine free cortisol cannot be added onto a 24 hour urine collection for metanephrines. Two seperate 24 hour urine collections will be required due to requirements for acid preservation for metanephrines.

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