Erythrocyte Fragility Test (Osmotic Fragility, OF)

Connected diagnostic information

Explore this test as a linked health pathway

1. What this test measures 2. Reference ranges 3. Increased / decreased markers 4. Related disease pages 5. Full article

What this test measures

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This section shows the biological marker/agent measured by this diagnostic test. Each marker/agent opens its own page with related conditions. Detailed reference ranges are shown separately in the Reference ranges and concentrations section below, so they are not repeated here.

Measured biological marker/agentPercentage NaCl at which Hemolysis beginsCategory / group: Blood Studies / Red Blood Cell TestsLinked condition pattern: 8 increased / 7 decreased linksTotal condition links: 15Reference ranges: shown in the reference range table below where available
Measured biological marker/agentPercentage NaCl at which Hemolysis is completeCategory / group: Blood Studies / Red Blood Cell TestsLinked condition pattern: 9 increased / 7 decreased linksTotal condition links: 16Reference ranges: shown in the reference range table below where available

Reference ranges and concentrations

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These ranges are pulled from the existing EH diagnostic-test reference range tables. They can vary by laboratory, method, age, sex, sample type and clinical situation.

Biological marker/agent / concentration	Reference range	Unit	Age	Gender	Category / test group
Percentage NaCl at which Hemolysis begins	0.5 – 0.6	%	All	Both	Blood Studies / Red Blood Cell Tests
Percentage NaCl at which Hemolysis is complete	0.3 – 0.35	%	All	Both	Blood Studies / Red Blood Cell Tests

Tip: scroll sideways on small screens to see all columns. Ranges are educational only and must be interpreted by a qualified clinician.

Conditions where linked markers may be increased or decreased

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This section links the test's biological markers/agents to related conditions. It is a browsing guide, not a diagnosis.

Markers often increased in

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Markers often decreased in

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