Full details for "Serum Folate Immuno Assay". | |
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Name |
Serum Folate Immuno Assay |
Alternative name/Profile |
|
Department |
Haematology |
Investigation |
|
Specimen type |
Serum |
Sample type |
|
Sample container & volume |
5ml Serum Red sample |
Frequency of analysis |
Daily (Monday-Friday) |
Turnaround time |
48hrs |
Availability |
Routine hours 9am to 5pm Monday-Friday |
Notes |
Patient must be fasting for a minimum of 12hrs (Queries to Haematinics Laboratory on 01-4162012) Haematinics Demand Management Guidelines: 1. Patients on parenteral vitamin B12 or oral folic acid replacement therapy should not have further vitamin B12 or folic acid measurements performed unless blood counts or neurological symptoms fail to improve. 2. Repeating normal vitamin B12 levels is rarely indicated within 6 months of testing. 3. Repeating normal folate levels is rarely indicated within 3 months of testing. 4. Clinical details are required for all B12 and folate requests. Compliance will be monitored by periodical auditing.
Haemolysed serum samples are unacceptable for analysis and give falsely raised folate results. Be aware that patient vitamin supplementation or therapy with high-dose biotin (>5mg/day) within 48 hours of sampling may interfere with laboratory testing for serum folate levels. In cases of clinically discordant results, you may wish to exclude possible biotin interference by enquiring about the use of supplements. Please refer to memo in related links section below for full details of potential interference. |
Related links |
Memo September 2020 regarding possible biotin interference with cyclosporine and serum folate assays |
Reference range |
4.5-20ug/L |
Last updated |
Wed, 01 Feb 2023 12:19:38 GMT |