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Potassium (Serum) with Electrophoresis Preparation (Nail Clippings)

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

This test measures potassium levels in your nail clippings as part of an electrophoresis preparation process, which helps assess mineral or electrolyte balance in your body.

Quick summary

["Nail clippings potassium testing supports broader mineral health monitoring, though results are indirect and used alongside other diagnostic methods."]

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

Key facts at a glance

LOINC
10689-8
Short code
KOH Prep Nail
Synonyms
KOH Prep Nail
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
koh-preparation
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may request this test if you have symptoms like muscle weakness, fatigue, or irregular heartbeat, or if they suspect electrolyte imbalances. Nail clippings provide a non-invasive way to analyze potassium indirectly through electrophoresis preparation.

What to Expect Before the Test

No special preparation is needed beyond providing clean nail clippings. Avoid using nail polish or harsh chemicals on your nails before collection.

How the Test Works

Nail clippings are analyzed using electrophoresis, a technique that separates minerals and electrolytes based on their electrical charge. Potassium levels are measured indirectly from the sample preparation.

What the Results Mean

Results from nail clippings are qualitative (not quantitative) and serve as a screening tool. They help identify potential mineral imbalances that may require further testing, such as blood draws, for precise potassium measurement.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Frequently asked questions

This test is primarily used as a preliminary screening for electrolyte disturbances, especially when blood tests are unavailable or impractical. It supports broader mineral health assessment but should not replace direct potassium measurement in critical cases.
This test does not provide a definitive potassium level but flags potential imbalances that may require further diagnostic evaluation.
How often can I get this test?
Nail clipping potassium tests are typically ordered as a one-time screening. Results are used to guide additional testing if needed, such as blood potassium levels.
What are the normal results expected?
Since this test is qualitative and indirect, there are no standard numeric ranges. Results are interpreted in the context of your overall health and clinical symptoms.
  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