Urine Ketone

Aka: Urine Ketone

II. Mechanism

  1. Dipstick detects acetic acid (Acetoacetate)
    1. In Diabetic Ketoacidosis, Beta-Hydroxybutyrate (primary Ketone) is converted to Acetoacetate
  2. Confirmatory Test
    1. Urine
      1. Acetest tablet test
    2. Blood (preferred)
      1. Beta-Hydroxybutyrate
        1. Best Ketone test
      2. Basic chemistry panel
        1. Ketoacidosis
          1. Low serum bicarbonate
          2. Increased Anion Gap
        2. Normal or resolving Ketoacidosis
          1. Normal serum bicarbonate
          2. Normal Anion Gap

III. Interpretation: Normal

  1. Negative

IV. Causes: Positive

  1. Dehydration
  2. Starvation or Low Carbohydrate Diets
  3. Diabetic Ketoacidosis (DKA)
  4. Alcoholic Ketoacidosis
  5. Isopropanol toxicity
  6. Pregnancy

V. Causes: False PositiveKetones on Urinalysis

  1. Low Urine pH (acidic)
  2. Increased Urine Specific Gravity
  3. Phenolphthalein
  4. Levodopa

VI. Causes: False NegativeKetones on Urinalysis

  1. Delayed urine exam

Images: Related links to external sites (from Bing)

These images are a random sampling from a Bing search on the term "Urine Ketone." Click on the image (or right click) to open the source website in a new browser window. Search Bing for all related images

Related Studies

Related Topics in Pathology and Laboratory Medicine

2021 Family Practice Notebook, LLC. Terms | Privacy (EHS) | About | Site Map | Blog

Footer Site Logo