Biomarker Lens

Common biomarkers

  • Hemoglobin
  • Glucose
  • ALT
  • Apolipoprotein B
  • C-Reactive Protein, Cardiac
  • Ferritin
  • Alb/Creat Ratio, Urine
  • Alkaline Phosphatase
  • FSH
  • T4,Free(Direct)

Biomarkers · Chemical

THC (MARIJUANA) MTB,IA

Primary unit
ng/mL
LOINC codes
42491-1
Tests that measure THC (MARIJUANA) MTB,IA
Labcorp 2

Tests

Check the catalog code, specimen, method and preparation for every test that measures THC (MARIJUANA) MTB,IA. Select up to five tests to compare them side by side.

Labcorp 2 tests

Single-analyte tests

  • Tetrahydrocannabinol (THC) Screen With Reflex Confirmation, Whole Blood 700881

    Blood · Fasting not stated · Turnaround 4 - 10 days

    Method and collection
    Method
    Initial presumptive testing by immunoassay at a testing threshold of 5 ng/mL; presumptive positives confirmed to limit of quantitation by definitive chromatography mass spectrometry (GC/MS) or LC/MS-MS).
    Labcorp catalog page

Panels that include this biomarker

  • Drug Screen 15 With Reflex Confirmation (AMP,BAR,BZO,COC,PCP,THC,OPI,OXY,MD,FEN,BUP,PPX,TRAM,GABA,CAR), Whole Blood 700902

    15 analytes · Blood · Fasting not stated · Turnaround 4 - 10 days

    Method and collection
    Method
    Initial presumptive testing by immunoassay at the following testing thresholds: amphetamines, 50 ng/mL; barbiturates, 0.1 μg/mL; benzodiazepines, 20 ng/mL; buprenorphine, 1.0 ng/mL; carisoprodol, 0.5 μg/mL; cocaine metabolite, 25 ng/mL; fentanyl, 1.0 ng/mL; gabapentin, 1.0 μg/mL; methadone, 25 ng/mL; opiates, 5 ng/mL; oxycodones, 5 ng/mL; phencyclidine (PCP), 8 ng/mL; propoxyphene, 50 ng/mL; tetrahydrocannabinol (THC), 5 ng/mL; tramadol, 50 ng/mL; presumptive positives confirmed to limit of quantitation by definitive chromatography mass spectrometry (GC/MS or LC/MS-MS)
    Labcorp catalog page

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Sources

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.

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