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Luminol Lux

Short answer: Luminol is a chemical used by forensic investigators to find traces of blood. Mixed with an oxidizer such as hydrogen peroxide, it reacts in the presence of the iron in hemoglobin, which acts as a catalyst, and gives off a blue glow, an example of chemiluminescence.

Other substances such as bleach and some metals can cause false positives. The footage shows luminol glowing in the dark.

VideoWrite-up1 sources
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What should you know about Luminol Lux?

Quick facts. Each one stands alone and has a stable ID you can cite.

  1. Forensic blood detection.

    DD-459-F01 · Write-up · Exhibit A (Use)

  2. Hydrogen peroxide.

    DD-459-F02 · Write-up · Exhibit B (Oxidizer)

Video transcript: Luminol Lux: Luminol Glows Blue When It Meets Traces of Blood

Did you know, Luminol is a chemical compound widely used in forensic science for detecting trace amounts of blood at crime scenes when mixed with an oxidizing agent like hydrogen peroxide and exposed to iron and hemoglobin Luminol undergoes a chemical reaction called chemiluminescence, emitting a blue glow NOW YOU KNOW!

Burned-in captions, read frame by frame (see transcript.md) · 16.3s Reel ·

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Luminol Lux: Luminol Glows Blue When It Meets Traces of Blood Instagram Reel · · 16.3s

The write-up

Luminol glows blue when it meets traces of blood. The iron in hemoglobin speeds the reaction.

  1. Exhibit A

    Use

    Forensic blood detection.

  2. Exhibit B

    Oxidizer

    Hydrogen peroxide.

  3. Exhibit C

    Catalyst

    Iron in hemoglobin.

  4. Exhibit D

    Glow

    Blue chemiluminescence.

  5. Exhibit E

    False positives

    Bleach and metals.

Questions people ask about Luminol Lux

What does luminol detect?

Forensics.

Source: Write-up · Exhibit A (Use) · Wikipedia: Luminol

What color is the glow?

Chemiluminescence.

Source: Write-up · Exhibit B (Oxidizer) · Wikipedia: Luminol

What catalyzes it?

Blood.

Source: Write-up · Exhibit C (Catalyst) · Wikipedia: Luminol

Which oxidizer?

Mixed in.

Source: Write-up · Exhibit D (Glow) · Wikipedia: Luminol

What gives false positives?

Cleaning agents.

Source: Write-up · Exhibit E (False positives) · Wikipedia: Luminol

Test Your Knowledge

All quizzes →

5 questions, all from this case file. Answers are revealed instantly.

  1. What does luminol detect?

    1. Blood
    2. Fingerprints
    3. Hair
    4. DNA directly
    Show the answer

    Answer: A. Blood Forensics. Source: Write-up · Exhibit A (Use) · Wikipedia: Luminol

  2. What color is the glow?

    1. Blue
    2. Red
    3. Green
    4. White
    Show the answer

    Answer: A. Blue Chemiluminescence. Source: Write-up · Exhibit B (Oxidizer) · Wikipedia: Luminol

  3. What catalyzes it?

    1. Iron in hemoglobin
    2. Salt
    3. Sugar
    4. Water
    Show the answer

    Answer: A. Iron in hemoglobin Blood. Source: Write-up · Exhibit C (Catalyst) · Wikipedia: Luminol

  4. Which oxidizer?

    1. Hydrogen peroxide
    2. Vinegar
    3. Ammonia
    4. Alcohol
    Show the answer

    Answer: A. Hydrogen peroxide Mixed in. Source: Write-up · Exhibit D (Glow) · Wikipedia: Luminol

  5. What gives false positives?

    1. Bleach
    2. Milk
    3. Paper
    4. Air
    Show the answer

    Answer: A. Bleach Cleaning agents. Source: Write-up · Exhibit E (False positives) · Wikipedia: Luminol

Cite this case file

Easterling, Marcus. "Luminol Lux." The Detail Department (DetailEnjoyer), case file DD-459, last updated Jan 14, 2025. https://detailenjoyer.com/case/luminol-lux/

Permalink: https://detailenjoyer.com/case/luminol-lux/ · Last updated

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Cite a single fact by its ID, for example DD-459-F01 → https://detailenjoyer.com/case/luminol-lux/#DD-459-F01