Biomarkers · Chemical
Potassium Serum
A potassium blood test measures the amount of potassium in your blood. Potassium is a type of electrolyte.
Potassium Blood Test, MedlinePlus, National Library of Medicine
- Also listed as
- serum potassium, k, plasma potassium, Potassium, Serum, Potassium
- Primary unit
- mmol/L
- LOINC codes
- 2823-3
- Tests that measure Potassium Serum
- Quest Diagnostics 25, Labcorp 15
Ranges
Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ
Labcorp, Potassium 001180
| Population | Interval |
|---|---|
| Age | Range (mmol/L) |
| 8 to 30 d | 3.7−6.4 |
| 1 to 6 m | 3.8−6.0 |
| 0 to 7 d | 3.7−5.2 |
| 7 m to 1 y | 3.8−5.3 |
| >1 y | 3.5−5.2 |
Quest Diagnostics, Potassium, Serum 733
| Population | Interval |
|---|---|
| ≤1 Week | 3.2-5.5 mmol/L |
| 8-27 Days | 3.4-6.0 mmol/L |
| ≥20 years | 3.5-5.3 mmol/L |
| 1-5 Months | 3.5-5.6 mmol/L |
| 6 Months-1 Year | 3.5-6.1 mmol/L |
| 2-19 Years | 3.8-5.1 mmol/L |
Tests
Check the catalog code, specimen, method and preparation for every test that measures Potassium Serum. Select up to five tests to compare them side by side.
Quest Diagnostics 25 tests
Single-analyte tests
Potassium, Plasma 11014
Plasma · Fasting not stated
Quest Diagnostics catalog pageMethod and collection
- Method
- Ion Selective Electrode (ISE)
- Collection
- Separate plasma from cells promptly
- Reference notes
- 3.4-4.8 mmol/L
Potassium, Serum 733
Serum · Fasting not stated · Turnaround Set up: Mon-Sat; Report available: 3 days
Quest Diagnostics catalog pageMethod and collection
- Method
- Ion Selective Electrode (ISE)
- Collection
- Separate from cells as soon as possible after clotting. Note: For plasma potassium, please see test code 11014.
Panels that include this biomarker
Electrolyte Panel 34392
4 analytes · Serum · Fasting not stated · Turnaround Set up: Mon-Sat; Report available: 3 days
Quest Diagnostics catalog pageMethod and collection
- Method
- See individual tests
- Reference notes
- See individual tests
Anion Gap Panel (Electrolyte Balance) 21105
5 analytes · Serum · Fasting not stated · Turnaround Set up: Daily
Quest Diagnostics catalog pageMethod and collection
- Method
- See individual tests
- Reference notes
- See individual tests
Electrolytes Feces 31595
5 analytes · 10 mL random watery liquid fecal collected in a plastic screw-cap container · No fasting
Method and collection
- Method
- Coulometric Titration • Flame Photometric
- Reference notes
- See Laboratory Report
Osmotic Gap Feces 17263
5 analytes · 10 mL random watery liquid fecal collected in a plastic screw-cap container · No fasting
Method and collection
- Method
- Flame Photometric
- Reference notes
- See Laboratory Report
Basic Metabolic Panel without Calcium 34388
8 analytes · Serum · Fasting not stated
Quest Diagnostics catalog pageMethod and collection
- Method
- See individual tests
- Preparation
- Fasting specimen is preferred
- Reference notes
- See Laboratory Report
Labcorp 15 tests
Single-analyte tests
Potassium 001180
Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- Ion-selective electrode (ISE)
- Collection
- Separate serum or plasma from cells within 45 minutes of collection; avoid hemolysis.
Panels that include this biomarker
Electrolyte Panel 303754
4 analytes · Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- Ion-selective electrode (ISE); enzymatic
- Collection
- Separate serum or plasma from cells within 45 minutes of collection; avoid hemolysis.
Litholink Serum Panel (Sodium, Potassium, Chloride, CO2, Creatinine, Calcium, Phosphorus, Magnesium, Uric Acid) 910103
10 analytes · Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- See individual tests.
- Preparation
- Patient should fast for 12 hours preceding collection of specimen.
- Collection
- Draw blood in a gel-barrier tube and centrifuge. If red-top tube or green-top tube is used, centrifuge within 45 minutes of draw, remove the serum or plasma and place in a transport tube and tightly stopper the tube.
Metabolic Panel (8), Basic 322758
10 analytes · Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- See individual tests.
- Preparation
- Patient should fast for 12 hours preceding collection of specimen.
- Collection
- Draw blood in a gel-barrier tube and centrifuge. If red-top tube or green-top tube is used, centrifuge within 45 minutes of draw, remove the serum or plasma, and place in a transport tube and tightly stopper the tube.
Renal Function Panel 322777
12 analytes · Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- See individual tests.
- Preparation
- Patient should fast overnight (12 hours preferred; eight hours acceptable) preceding collection of specimen.
- Collection
- Separate serum or plasma from cells within 45 minutes of collection.
Kidney Profile Plus Metabolic Panel (8), Basic 140302
13 analytes · Serum · Fasting not stated · Turnaround Within 1 day
Labcorp catalog pageMethod and collection
- Method
- See individual tests.
- Collection
- Separate serum or plasma from cells within 45 minutes of collection.
0 of 5 tests selected
Pick one moreSources
15 tests: codes, specimens, methods, preparation and reference intervals.
Quest Diagnostics test catalog
25 tests: codes, specimens, methods, preparation and reference intervals.
MedlinePlus, National Library of Medicine
The description at the top of this page.
LOINC 2823-3
Regenstrief Institute codes that identify the same result across labs.
Search ClinicalTrials.gov for Potassium Serum
Registered studies that measure Potassium Serum, on the U.S. National Library of Medicine registry.
Verify these ranges and sources
We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.
Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.
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