Iron storage marker used in fatigue, hair-loss and anaemia work-ups. Interpret alongside CRP because it rises with inflammation.
Vitamin D, 25-hydroxy
The standard vitamin D status marker. High-volume test in wellness subscriptions because it changes behaviour — and repeats quarterly.
Quick answer: Vitamin D, 25-hydroxy is ordered as a single LOINC-coded assay (1989-3) on a Serum separator tube · 2 mL specimen, runs in a CLIA-certified laboratory, and returns structured results in 24 h for 39 US$ per test.
Specifications
- LOINC code
- 1989-3
- Category
- Vitamins & minerals
- Specimen
- Serum separator tube · 2 mL
- Turnaround
- 24 h
- Result format
- LOINC-coded JSON · signed PDF · FHIR DiagnosticReport
- Reference ranges
- Included, age- and sex-specific where applicable
- Price
- 39 US$ / لكل تحليل
What this test measures
- 25-OH vitamin D2
- 25-OH vitamin D3
Sample API response
{`{
"order_id": "ord_9f2c",
"test": { "loinc": "${test.loinc}", "name": "${test.name}" },
"specimen": "${test.sample}",
"status": "final",
"results": [
{ "analyte": "…", "value": 0, "unit": "…",
"ref_range": "…", "flag": "normal" }
],
"performed_by": { "lab": "CLIA 05D…", "npi": "…" }
}`} Related tests
الأسئلة الشائعة
Can I order tests for patients in the United States?
Yes, with the right clinical wrapper. Consumer-initiated testing in the US requires an ordering clinician or a patient-authorized direct-access model depending on the state. We support both: bring your own clinician network, or use our clinical review partners.
How do results come back?
Three formats, all from the same order: a signed webhook event, a LOINC-coded JSON payload with reference ranges and abnormal flags, and a PDF report. FHIR DiagnosticReport export is available on the platform plan.
What does it cost?
You pay per test. Sandbox keys are free, and pricing in production starts at the listed catalog price with volume tiers from 500 tests per month. There is no setup fee and no per-seat licence.
How do you handle PHI and HIPAA?
PHI is encrypted at rest and in transit, access is logged, and we sign BAAs with covered entities. Data residency options exist for EU and UK customers under GDPR. Full details are on the compliance page.
أدمج التحاليل المخبرية في منتجك هذا الأسبوع
مفاتيح بيئة الاختبار مجانية. تدفع لكل تحليل عند التشغيل الفعلي.
CLIA-certified labs · HIPAA-aligned · No subscription