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Homocysteine, Urine

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

This test measures the amount of homocysteine, a chemical that can build up in your urine, which may be linked to certain health conditions.

Quick summary

["Urine homocysteine testing helps assess potential risks for kidney or metabolic issues."]

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

Key facts at a glance

LOINC
14053-3
Short code
(Hcys)2 Ur Ql
Synonyms
(Hcys)2 Ur Ql
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
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 recommend this test if you have symptoms or risk factors for conditions like kidney disease, metabolic disorders, or genetic conditions affecting homocysteine metabolism. It may also be part of a broader evaluation for unexplained health concerns.

What to Expect Before the Test

No special preparation is needed for this urine test. You may collect a random urine sample at any time of day, but it’s best to avoid certain medications or foods that could interfere with results (e.g., ask your provider for guidance).

How the Test Works

A small urine sample is collected and sent to a lab, where it is analyzed to measure homocysteine levels. The test detects the chemical’s presence and concentration without requiring invasive procedures.

What the Results Mean

Results are typically reported as a concentration value (e.g., in micromoles per liter). Elevated levels may signal underlying health concerns, but interpretation depends on clinical context and other test results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High urine homocysteine levels may indicate conditions like chronic kidney disease, certain genetic disorders, or metabolic imbalances. While not always diagnostic alone, it can help guide further evaluation, such as additional blood tests or lifestyle discussions.

Short name

Homocysteine (Urine)

Frequently asked questions

What causes elevated homocysteine in urine?
Elevated homocysteine in urine can result from kidney dysfunction, genetic factors, vitamin deficiencies (like folate or B12), or certain medications. Lifestyle factors, such as smoking or poor diet, may also play a role.
Can diet affect urine homocysteine levels?
Yes, diet can influence homocysteine levels. Foods high in folate, vitamin B6, or B12 (e.g., leafy greens, nuts, fortified foods) may help lower levels, while processed foods or excessive alcohol may raise them.
When should I follow up with my doctor about these results?
If your results are abnormal, your doctor will discuss next steps based on your overall health. Follow-up may include additional tests, lifestyle advice, or monitoring for related conditions.
  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