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: Molybdenum, Mass Concentration, Hair

Published: August 9, 2026Updated: August 16, 2026

: This test measures the amount of molybdenum by mass in a sample of hair, which can reflect longer-term exposure or body stores of this trace element.

Quick summary

[": Hair molybdenum testing estimates how much molybdenum has accumulated in hair over time, but results must be interpreted carefully because hair can be contaminated by external sources."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
78851-3
Short code
m-CPP Hair-mCnt
Synonyms
m-CPP Hair-mCnt
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

: About the Test

: Molybdenum is an essential trace mineral that the body uses in small amounts to help process certain enzymes and break down substances from food. This test measures the mass of molybdenum found in a hair sample, reported as a mass concentration.

: Why It Might Be Ordered

: A clinician may request this test when evaluating possible exposure to molybdenum or when investigating unusual trace-element patterns. Hair is sometimes used because it can accumulate minerals over weeks to months, offering a window into longer-term exposure.

: How the Sample Is Collected

: A small sample of hair is cut, usually from the back of the scalp near the skin, and sent to a laboratory for analysis. The collection is quick and does not involve a needle.

: What the Results Mean

: A result is reported as a concentration of molybdenum by mass in hair. There is no single universal reference range, and results can be affected by hair treatments, shampoo, environmental dust, and how the sample was collected. Your clinician will interpret the value alongside your history, other tests, and any known exposures.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

: Hair Molybdenum

Frequently asked questions

: Is hair testing a reliable way to check molybdenum levels?
: Hair testing can show accumulation over time, but it is not considered a stand-alone diagnostic test because external contamination and hair care products can affect results. It is best used alongside other clinical information.
: Does this test require fasting or special preparation?
: Usually no special preparation is needed, but follow any instructions from your clinician. Avoid applying hair products or treatments before collection if advised, since these can affect the sample.
: Can I interpret the number myself?
: No. Reference ranges vary by laboratory and method, and hair results can be misleading without context. Your clinician should interpret the result together with your history and other tests.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy