Transferrin

TFN

2-8 C (ice packs)

store at 2-8 C up to 3 days, -20C up to 6 months

0.5 mL

Plasma (lithium heparin, sodium heparin, EDTA)

1-14 years: Male 186-388 mg/dL Female: 180-391 mg/dL >14-60 years: Male 174-364 mg/dL Female: 180 mg/dL-382 mg/dL >60 years: Male 163-344 mg/dL Female 173-360 mg/dL

Routine venipuncture

Draw tube or plastic pour off tube

Immunoturbidimetric

Decreased levels-negative APR (acute phase reactants) in response to inflammation, necrosis, or malignancy, chronic liver diseasse, malnutrition, nephrotic syndrome, protein-losing enteropathies, iron overload due to multiple transfusion or hereditary hemochromatosis, and congenital atransferrinemia. Elevated levels-iron deficiency anemia, increased estrogen due to pregnancy, oral contraceptives