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Test Code SAT Percent Saturation


Specimen Required


Only orderable as part of profile. For more information see SFEC / Iron and Total Iron-Binding Capacity, Serum


Secondary ID

2503

Useful For

Calculation of percent saturation

Method Name

Only orderable as part of profile. For more information see SFEC / Iron and Total Iron-Binding Capacity, Serum

 

Calculation

Specimen Type

Serum

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 21 days
  Frozen  365 days

Reference Values

Only orderable as part of profile. For more information see SFEC / Iron and Total Iron-Binding Capacity, Serum

 

14-50% 

Interpretation

Percent saturation often exceeds 45% in hereditary hemochromatosis and 90% in advanced iron overload states.(2)

 

Percent saturation less than 16% is generally used to screen for iron deficiency, but a threshold of 20% is used in the presence of inflammation.(3)

Method Description

This test calculates the percentage of iron saturation using results obtained from the serum iron measurement and calculated total iron binding capacity (TIBC). The following calculation is performed in the laboratory information system:

Percent saturation = (Iron [mcg/dL]/TIBC [mcg/dL]) x100

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Specimen Retention Time

7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

LOINC Code Information

Result ID Test Result Name Result LOINC Value
SAT Percent Saturation 2502-3