Reference ranges
Chloride reference range
Reference ranges describe the interval a laboratory prints next to your result. They are not a diagnosis of what is “normal” for you personally — your clinician interprets results in context.
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What Chloride measures
Labs measure chloride concentration in blood, which typically moves together with sodium.
Why ranges differ
Laboratories set their own reference intervals using their methods, equipment, and population data. That is why the range on your Quest report may differ from a LabCorp report — always use the interval printed on your source document.
Common units
Chloride is often reported in mmol/L. Confirm units on your original report before comparing values across time.