Thiopurine Metabolites
Ordering Info & Methodology
Test Code
Cerner Synonyms
NCODE
Thiopurine Metabolites, 6-Mercaptopurine Metabolites; 6-MP Metabolites; 6-TGN; 6-MMPN
Turn Around Time
Methodology
Test performed weekly
Ordering Guide
Specimen Requirements
Sample Type
Collection Container
Alternate Collection Containers
EDTA Whole Blood
Light Green
Dark Green
3 mL
3 days
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
Send whole blood at 2-8°C. Do NOT centrifuge or freeze. Frozen or hemolyzed samples will be rejected.
Reference Intervals
Female Reference Interval
Age Category | Reference Interval | units |
|---|---|---|
Male Reference Interval
Age Category | Reference Interval | units |
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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.
Example
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
This test is for the metabolic breakdown products of the mercaptopurine drug. It is different from TPMT Enzyme/TPMT Genetics testing.