Clinical laboratories in Donostia, Gasteiz and Bilbao
RPS 131/24Privacy
Combined pathway

Vitamins and micronutrients

Assesses selected nutrients—such as vitamin D, vitamin B12 or folate—when symptoms, risk factors or monitoring justify testing; they do not all use the same specimen or method.

SampleUsually venous blood.
FastingDepends on accompanying tests and supplements or medicines; instructions are confirmed when booking.
Indicative turnaroundSome tests can be processed by immunoassay at Askabide when an active validated reagent is available; others are referred and take several days.
PathwayCombined pathway
Available atDonostia · Gasteiz · Bilbo

Why it is performed

  • Investigate a suspected deficiency because of symptoms, diet, malabsorption, surgery, pregnancy or medication.
  • Monitor a known deficiency and adjust treatment while avoiding both under-treatment and excess.
  • Complement evaluation of anaemia, bone health, fatigue or other problems when clinically reasonable.

How it is performed

Each analyte and required tube is selected. Askabide uses ichroma™ II fluorescence immunoassay for the specific assays it has active and validated; remaining tests are sent to a partner laboratory. The final website will advertise only the genuinely operational menu.

Preparation

  • Report supplements, high-dose biotin and the date/time of the last dose; these can alter or complicate some immunoassays.
  • Do not stop prescribed treatment or supplements without advice.
  • For follow-up, try to keep method, sampling time and conditions comparable.

How Askabide processes it

Combined pathway

Fluorescence immunoassay or another validated method depending on the analyte. ichroma™ II supports different assays through specific cartridges; owning the instrument does not mean every analyte in the manufacturer catalogue is active at each centre.

Part is performed at Askabide and another phase or confirmation is processed externally.

Results and indicative intervals

Intervals vary by method, analyser, reagent, units, age, sex, pregnancy, menstrual-cycle phase and reference population. The valid interval is the one printed on the laboratory report.
Parameter or resultIndicative referenceHow it is interpreted
25-OH vitamin DMétodo e indicación específicosDeficiency and target thresholds depend on guideline, risk and method; use the report and clinical judgement.
Vitamin B12Intervalo del laboratorioA borderline value may require methylmalonic acid, homocysteine or clinical assessment.
FolateIntervalo del laboratorioInterpret with diet, supplements, CBC and clinical context.
FerritinIntervalo por sexo/edad y métodoCan rise with inflammation and is not solely a marker of iron stores.

Important limitations

  • Intervals and targets depend on method, population and reason for testing.
  • A single value does not by itself explain non-specific symptoms such as fatigue.
  • Unindicated supplements can mask problems, interfere with tests or cause toxicity.
  • On-site availability must be confirmed before the appointment.
This website provides general information about clinical laboratory tests and diagnostic procedures. It does not replace an individual clinical assessment or the interpretation of the report issued by the laboratory.
Published reference values are indicative and may vary according to the method, equipment, units and individual characteristics.