Skip to content

Chloroform in Blood (Mass Concentration)

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

This test measures the amount of chloroform, a chemical substance, present in your blood. Chloroform is not typically found in healthy individuals and may indicate exposure or ingestion.

Quick summary

["Chloroform exposure can be detected through this blood test, often used in occupational or environmental health assessments."]

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

Key facts at a glance

LOINC
9333-6
Short code
Chloroform Bld-mCnc
Synonyms
Chloroform Bld-mCnc
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may request this test if you’ve been exposed to chloroform—whether through work, household products, or other sources. It could also be part of a broader evaluation for poisoning, occupational hazards, or suspected chemical contamination.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for 8–12 hours before the draw if your lab uses a specific protocol. Wear a comfortable shirt for easy access to your arm.

What the Test Results Mean

High levels of chloroform in your blood suggest recent exposure. Very low or undetectable levels are typical for healthy individuals without known exposure. Results are interpreted by your doctor based on your medical history and symptoms.

Common Causes of Elevated Chloroform Levels

Exposure to chloroform can occur through inhalation (e.g., industrial settings, cleaning products) or ingestion (e.g., accidental poisoning). Chronic exposure to low levels may also contribute, though this is less common.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Chloroform Level

Frequently asked questions

If your test results show elevated chloroform levels, your doctor may recommend further evaluation to determine the source of exposure. They could also monitor you for symptoms like dizziness, nausea, or respiratory issues, depending on the severity.
This test alone doesn’t diagnose poisoning or long-term health effects. Your doctor will consider other factors, such as your occupation, lifestyle, or symptoms, before making a diagnosis or treatment plan.
What happens if my chloroform levels are normal?
If your results are within expected ranges, it suggests you haven’t recently been exposed to chloroform. However, if you suspect exposure, discuss it with your doctor to explore other testing or safety measures.
Can I drink alcohol before this test?
Alcohol may not affect this test, but some labs recommend avoiding it for 24 hours before drawing blood to ensure accurate results. Always follow your lab’s specific instructions.
  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