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Cystine and Related Amino Acid Urine Profile (Multianalyte)

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

This test measures multiple amino acids, including cystine, in your urine. It helps identify conditions like cystinuria, where certain amino acids accumulate abnormally, potentially causing kidney stones or other health issues.

Quick summary

["This test helps diagnose and monitor conditions affecting amino acid metabolism in urine."]

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

Key facts at a glance

LOINC
105260-4
Short code
Cystinuria multi anl Bld/T
Synonyms
Cystinuria multi anl Bld/T
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
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

What Does This Test Measure?

Your urine sample will be analyzed for several amino acids, including cystine, ornithine, lysine, arginine, and possibly others. The test detects their presence and relative concentrations, which may differ from typical levels in healthy individuals.

Why Might You Need This Test?

A doctor may recommend this test if you have symptoms like kidney stones, recurrent infections, or if they suspect an inherited disorder like cystinuria. It can also be part of a broader evaluation for metabolic conditions.

How Is the Sample Collected?

You’ll provide a urine sample, typically collected over a 24-hour period or a single random sample, depending on the clinical need. The sample is sent to a lab for analysis using advanced techniques like chromatography or immunoassay.

What Are Common Results?

Results will show the concentration levels of each measured amino acid. Elevated levels of cystine or other amino acids may indicate cystinuria or other metabolic disorders. Normal results suggest no significant abnormalities in these amino acids.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test plays a critical role in diagnosing cystinuria and other aminoacidurias. High cystine levels in urine are strongly associated with an increased risk of kidney stone formation due to cystine stones, which are harder and more resistant to dissolution than other types. Early detection allows for better management and prevention strategies, including dietary adjustments and hydration.

Short name

Cystinuria Multianalyte Urine Test

Frequently asked questions

What does a high or low level of cystine or other amino acids mean?
High levels of cystine or other amino acids in urine may suggest a condition like cystinuria, where the body fails to reabsorb these substances properly. This can lead to kidney stones or other complications. Your doctor will interpret results in the context of your symptoms and medical history.
How often should I get this test?
The frequency depends on your health condition and treatment plan. If you have cystinuria or a related disorder, your doctor may recommend regular monitoring to track changes in amino acid levels and kidney function.
Can I take any special steps before giving this urine sample?
Yes, follow your doctor’s instructions carefully. For a 24-hour urine collection, start and stop at the same time each day, collecting all urine produced. For a random sample, avoid urinating right before the test. Drink plenty of water unless advised otherwise to ensure a representative sample.
  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