you probably already knew this- and it doesn't diagnose or give tx.

en.wikipedia.org/wiki/Total_iron-binding_capacity 

Interpretation

Taken together with serum iron and percent transferrin saturation clinicians usually perform this test when they are concerned about anemia, iron deficiency or iron deficiency anemia. However, because the liver produces transferrin, alterations in function (such as cirrhosis, hepatitis, or liver failure) must be considered when performing this test. It can also be an indirect test of liver function, but is rarely used for this purpose.

The percent transferrin saturation (i.e., the result of the formula of serum iron/TIBC x 100) can also be a useful indicator.

Normal reference ranges are:

• Serum iron: Male 65-177 μg/dL (11.6-31.7 μmol/L); Female 50-170 μg/dL (9.0-30.4 μmol/L)
• TIBC: 240-450 μg/dL (43.0-80.6 μmol/L)
• Transferrin saturation: Male 20-50%; Female 15-50%

μg/dL = micrograms per deciliter; μmol/L = micromoles per litre.

Laboratories often use different units and "normal" may vary by population and the lab techniques used. Look at the individual laboratory reference values to interpret a specific test (for instance, your own).