Iron
| Abbrev Code: | FE | ||
| Order Code: | LAB94 | Order Name: | Iron |
| Methodology: | Roche: Colorimetric
Vista: Bichromatic endpoint |
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| CPT Codes: | 83540 x1, 83540 x1 | ||
| Turnaround Time: | Performed and reported 24 hours/day. | ||
| Associated Links: | |||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.5 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Collection Instructions: | Chemistry Tests Containers Chart
Collect sample before patient is given therapeutic iron or a blood transfusion. Blood transfusion can transiently (<24 h) increase serum iron concentration and transferrin saturation (but not total iron binding capacity), particularly if the blood has been stored for a longer period (Blood 2011 Dec 15; 118(25):6675-82; Arch Pathol Lab Med 1993 Jun; 117(6):(622-4).Therefore, if a patient has received blood, delay testing for 24 hours to avoid false elevation of iron or transferrin saturation. Calculation for Transferrin Saturation: (serum iron/TIBC) x 100. |
| Causes for Rejection: | Moderate hemolysis |
| Contraindications: | Falsely elevated iron levels will result if the patient has received therapeutic iron within the past two months. Patients treated with metal-binding drugs such as Deferoxamine may have depressed iron values as chelated iron may not properly react in the iron assay. |
Processing and Shipping
| Specimen Processing: | Centrifuge within 4 hours and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | Roche: 3 weeks refrigerated; 2 years frozen.
Vista: 7 days refrigerated; 6 months frozen. |
| Test Performed at or Referral Lab | Chemistry (CSC Maple Grove, Roche-CSC Mpls, Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-Ridges, Roche-Southdale, Roche-St. John's, Roche-UMMC East, Roche-UMMC West) |
Interpretive
| Reference Range: |
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