6-Thioguanine (6-TG) and 6-Methylmercaptopurine (6-MMP)

LOINC codes: 32654-6, 32660-3
Tests that measure 6-Thioguanine (6-TG) and 6-Methylmercaptopurine (6-MMP): Quest Diagnostics 1

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, Thiopurine Metabolites 91745

Population	Interval
6-TG	235-400 pmol/8x10(8) RBC
6-MMP	<5700 pmol/8x10(8) RBC

Quest Diagnostics test catalog, 91745

Tests

Check the catalog code, specimen, method and preparation for every test that measures 6-Thioguanine (6-TG) and 6-Methylmercaptopurine (6-MMP). Select up to five tests to compare them side by side.

Quest Diagnostics 1 test

Single-analyte tests

Thiopurine Metabolites 91745
Blood · Fasting not stated · Turnaround Set up: Tue-Sat; Report Available: 3-5 days
Method and collection
Method
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Preparation
A trough specimen is required (within 1 hour prior to the next dose)
Collection
A trough specimen is required (within 1 hour prior to next dose)
Quest Diagnostics catalog page

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Sources

Check the guidelines, studies and lab catalogs behind every range and link on this page. Open a source to see each claim it backs.

Lab catalogs

Quest Diagnostics test menu
Quest Diagnostics
- Test catalog: 1 tests, with codes, specimens, methods and reference intervals
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Codes and registries

LOINC 32654-6, 32660-3
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for 6-Thioguanine (6-TG) and 6-Methylmercaptopurine (6-MMP)
Registered studies that measure 6-Thioguanine (6-TG) and 6-Methylmercaptopurine (6-MMP), on the U.S. National Library of Medicine registry.

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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