Total Homocysteine, Dried Blood Spot (DBS) filter paper !!! NOTE: The contents are valid only for: 04/25/2025 !!!
| WSLH Department: | Biochemical Genetics |
| WSLH Test Code: | BG00595 |
| Day(s) Performed: | Prior to submission of specimens for Biochemical Genetics testing, please contact the laboratory at: (608) 263-4619. |
| Turn-around Time: | 5 working days |
| Recommended Uses: | Total homocysteine quantification can be used to assess patients for cobalamin (vitamin B12) deficiency, and primary or secondary disorders of methionine metabolism. There is also a weak association between homocysteine concentrations and coronary heart disease. |
| Pre-approval: | N |
| Contraindications: | None |
| Additional Tests Performed: | |
| Preparation for Collection: | |
| Specimen Requirements: | Whole blood spotted on filter paper. The filter paper is part of the collection kit. |
| Collection Instructions: | 2 dime-sized dried blood spots collected on provided filter paper. Allow blood specimen to dry horizontally for at least 3 hours prior to transport. |
| Collection Kit/Container: |
Whatman 903 filter paper
|
| Requisition Form: |
Biochemical Genetics Requisition Form
|
| Required Information: | Laboratory regulations require the following minimum information to be provided on the requisition form for a specimen to be accepted for testing: Patient name or unique identifier; date and time of collection, patient date of birth and sex, specimen type/site of collection, test request(s), clinician name and UPIN, and address for reporting results. Please be certain that name/identifier on the form matches that on the specimen label. |
| Rejection Criteria: | Specimens are deemed unacceptable for testing for the following reasons: Blood clots; Layered blood; Incomplete saturation; Plasma separation for red blood cells; Contamination of filter paper; Damage to filter paper; Blood on filter paper cover. |
| Specimen Handling: | Specimens should be sent at ambient temperatures. |
| Packaging Requirements: | |
| Courier Information: | |
| Specimen Receiving Hours: | Monday-Friday 7:00 AM - 4:30 PM, Saturday 7:00 AM - 12:00 PM |
| Results Include: | Quantification of total homocysteine and an interpretation of results. |
| Limitations: | |
| Additional Tests Recommended: | See report for recommendations |
| Additional Comments: | |
| Methodology: | HPLC |
| Includes: | Quantification of total homocysteine. Interpretation of clinical significance provided. |
| Regulatory Compliance: | |
| CPT Code: | 83090 |
| Price: | For pricing information, please call 608-262-9674 |
| Fee Exempt Eligible: | N |
| Billing and Revenue Office: | 1-800-862-1065 arbill@slh.wisc.edu |