Potassium

4.3 mmol/L

In the usual range

Sep 18, 2026, Labcorp. 4 results in this record.

Judged against the usual range for this sex and age. The lab’s own range wasn’t on the report. The open ring is the result before this one.

Up 4.9% since Jun 7, 2025

That's within the usual test-to-test variation for Potassium, which can be about 13% either way.

Assumes the same lab and similar conditions, like fasting and time of day.

Over time

Potassium has been in the usual range at all 4 tests since Oct 2023.

In the usual range Above BelowNormal variation from the result before

Highest 4.4 mmol/L (Oct 2024), lowest 4.1 mmol/L (Jun 2025).

Age 65 or older

The American Geriatrics Society notes that some medicine combinations raise the chance of high potassium when kidney function is reduced. Examples are two blood pressure medicines that act on the renin-angiotensin system (such as ACE inhibitors or ARBs), one of these with a potassium-sparing diuretic, or the antibiotic trimethoprim-sulfamethoxazole with an ACE inhibitor, ARB or ARNI.

Blood tests for older adults

Ask about Ruth’s Potassium

AI assistant. It answers from this record’s own numbers and can still make mistakes, so check important details against the report. It doesn’t diagnose.

Compare with other tests

Each test is drawn by where it sits in its own usual range, so tests in different units share one chart. The shaded band is the usual range for each. Pick up to four.

PotassiumSodiumCreatinine

Among people like Ruth

Higher than about 75 of every 100 U.S. women aged 60–69.

At the first result (Oct 2023): higher than about 63 of every 100 U.S. women aged 60–69. Now: higher than about 75 of every 100 U.S. women aged 60–69.

Middle half of people (3.9–4.3)Middle 90% (3.5–4.6)Median

Ruth’s results over the U.S. range by ageShaded: middle 90% and middle 50% of people. Line: the median. mmol/L. Point at any age, or focus the chart and use the arrow keys, to read it in words.

Reference data derived from CDC/NCHS National Health and Nutrition Examination Survey (NHANES), cycles August 2021-August 2023. Analysis by bloodtesttracker.com; not endorsed by CDC, NCHS or HHS.

Compared with 734 women aged 60–69 in the U.S. National Health and Nutrition Examination Survey (NHANES), August 2021–August 2023. That’s everyone, not a healthy group, so common doesn’t mean ideal and uncommon doesn’t mean a problem. Labs’ methods differ a little. Potassium at every age

Every result

Sep 18, 20264.3 mmol/L In the usual rangeUsual range 3.5–5.2 mmol/LLabcorp
Jun 7, 20254.1 mmol/L In the usual rangeUsual range 3.5–5.2 mmol/LLabcorp
Oct 19, 20244.4 mmol/L In the usual rangeUsual range 3.5–5.2 mmol/LQuest Diagnostics
Oct 14, 20234.2 mmol/L In the usual rangeUsual range 3.5–5.2 mmol/LQuest Diagnostics (photo of the printout)