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* IRON

Mnemonic

IRON

Synonym

FE

Specimen Collection Requirements

Patient Preparation

The preferred specimen is taken in the morning from patients who have fasted at least 8 hours. Iron values decrease by 30% during the course of the day. The patient should not take iron supplements at least 24 hours before blood is drawn.

Collect

Serum or Plasma, one 5.0 mL gold (SST), 7.0 mL red, or 3.0 mL mint green (lithium heparin, PST) top tube

View image for Supply Item Number - 101235 or 101192

Handling

Allow serum to completely clot at room temperature (minimum: 30 minutes). Centrifuge and separate serum or plasma from cells ASAP. Avoid contamination with environmental iron. Use only iron-free collection tubes, pipets and test tubes.

Preferred Volume

1.0 mL

Minimum Volume

0.25 mL, Serum/Plasma, (Whole blood 0.60 mL minimum draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

AFTER SEPARATION FROM CELLS: Ambient (18-26°C): 4 days; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 1 month

Testing Information

Performed

7 day/week

Reported

24 hours

Method

Colorimetry

Reference Values

Reference Values

Critical Values

For critical age related ranges see Chemistry Age Related Reference Ranges and Critical Values.

CPT Codes

83540

Last Updated: Thursday, November 9, 2017 01:14:50 PM


Client Services: 503-413-1234