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Heptadecenoate/Creatinine, Urine/Stool

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

A specialized test that measures heptadecenoic acid in urine or stool and may include creatinine for comparison or normalization.

Quick summary

["This test measures heptadecenoic acid, with creatinine providing context for interpreting the result."]

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

Key facts at a glance

LOINC
48113-5
Short code
Heptadecenoate/Creat Ur-sRto
Synonyms
Heptadecenoate/Creat Ur-sRto
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Ref low
0.8
Ref high
1.2
Critical range
— – 5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
85610
SNOMED
396252006
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

What is this test?

This test measures heptadecenoic acid, also called heptadecenoate, in a urine or stool sample. Creatinine may also be measured to help compare the heptadecenoate result with the amount of sample tested.

Why might I need this test?

This is a specialized biochemical test that may be ordered when a clinician is evaluating fatty-acid metabolism, absorption, or an unusual metabolic condition. The reason for testing and the most useful specimen depend on the specific clinical situation.

How is the test performed?

A urine or stool specimen is collected according to the laboratory's instructions and analyzed for heptadecenoate and, when applicable, creatinine. Some tests use a calculated ratio between the two measurements.

How do I prepare for the test?

Follow the collection instructions provided by your healthcare professional. Your clinician or laboratory should advise you about fasting, diet changes, medication use, and which specimen is required; do not stop medications unless instructed.

Reference range

INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A

Specimen: urine

Inform your healthcare provider if you are taking blood thinners. No special preparation required.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Heptadecenoate/Creatinine

Frequently asked questions

What does a high heptadecenoate result mean?
It may indicate increased amounts or altered handling of certain fatty acids, but it does not identify a specific condition by itself. Your clinician will interpret it alongside symptoms, other tests, and the type of specimen used.
Why is creatinine included in the test?
Creatinine can help show how much material the result represents and may be used to calculate a ratio. This allows results from different samples to be compared more reliably.
Do I need to fast before this test?
Fasting requirements depend on the laboratory and the reason for testing. Ask your healthcare professional whether dietary restrictions or medication adjustments are necessary before collecting the specimen.
  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