500 Kshs | Home Collection Available
Potassium Blood Test
Synonyms
None
Purpose
The Potassium Blood Test measures the concentration of potassium ions in the blood. Potassium is an essential mineral that plays a key role in maintaining proper muscle function, nerve signaling, and heart rhythm.
This test analyzes a blood sample to determine whether potassium levels are within the normal range. It’s especially important for diagnosing and monitoring conditions that affect the kidneys, heart, and adrenal glands.
Abnormal potassium levels can be life-threatening, making this test crucial for patients on certain medications, those with chronic illnesses, or those experiencing symptoms like weakness, irregular heartbeat, or fatigue. It is often performed alongside tests like the Sodium Blood Test, Kidney Function Tests (such as creatinine and urea), and Electrolyte Panels to provide a broader picture of a patient’s fluid and electrolyte balance.
Patient Preparation
No special preparations required.
Samples
1ml with a minimum volume of 0.7ml of serum or plasma collected in a Gel-barrier, red-top, or green top tube (lithium heparin). Avoid using EDTA, oxalate, or citrate plasma. Serum or plasma should be separated within 45 minutes of sample collection. Store sample at room temperature or refrigerate.
Reference Range
>1 year 3.5-5.2 mmol/L
Results Turnaround
Within 24 hours after sample collection.
Diseases / Diagnostic indicators
The Potassium test can reveal two main types of abnormalities: hypokalemia (low potassium levels) and hyperkalemia (high potassium levels). Hypokalemia may indicate conditions such as Conn syndrome, and can result from excessive loss of potassium due to vomiting, diarrhea, intestinal fistulas, or folic acid deficiency.
On the other hand, hyperkalemia often points to the kidneys not properly excreting potassium, which may occur in kidney disease or as a side effect of certain medications. Both conditions can affect heart rhythm, muscle function, and overall body balance, making timely detection and treatment essential.
Visit this study for more information on the Potassium Blood Testing.