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HelpTest Code LAB1013 Fructosamine, Serum
Additional Codes
FRUCT
Useful For
Monitoring intermediate (1-3 weeks) glycemic control
Monitoring glycemic control in patients with shortened red blood cell survival
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and the serum aliquoted into a plastic vial within 2 hours of collection.
On-campus collections: Send in plastic vial, Refrigerated.
Off-campus collections: Centrifuge and aliquot within 2 hours. Specimen to be stored/transported at Refrigerated temp.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 60 days | ||
| Ambient | 72 hours |
Reference Values
200-285 mcmol/L
Day(s) Performed
Monday through Sunday
CPT Code Information
82985
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FRUCT | Fructosamine, S | 15069-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| FRUCT | Fructosamine, S | 15069-8 |
Interpretation
In general, fructosamine reflects glycemic control in diabetic patients over the previous 1 to 3 weeks. High values indicate poor control.
All glycated proteins are measured by this method, with glycated albumin contributing a large portion.
Method Description
The fructosamine assay is a colorimetric test based on the ability of ketoamines to reduce nitroblue tetrazolium to formazan in an alkaline medium. The rate of formation of formazan is directly proportional to the concentration of fructosamine, and is measured photometrically at 546 nm.(Package insert: Fructosamine reagent. Roche Diagnostics; v. 8.0, 12/2018)
Report Available
Same day/1 to 2 daysSpecimen Retention Time
1 weekReject Due To
| Gross hemolysis | Reject |
| Gross icterus | Reject |
Method Name
Colorimetric Rate Reaction