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Basic blood count and thrombocytes


Basic blood count and thrombocytes (B-PVK+T) provides an overview of haemoglobin and different blood cells. The blood count tests for red cells (erythrocytes), white cells (leucocytes), and platelets (thrombocytes). Abnormal results for these cells may be a sign of illness.

The blood consists of various cells circulating through the arteries, heart, and veins and delivering nutrients, hormones, vitamins, antibodies, and oxygen to the tissues. Red blood cells contain a protein called haemoglobin, which delivers oxygen to tissues. White blood cells protect the body against bacteria, viruses, and fungal infections and regulate the immunological process. Platelets promote coagulation in the event of wounds and ruptured blood vessels.

When is a good time to measure the PVK+T value?
  • Fatigue
  • Weakness
  • Infection
  • Bruises or bleeding
  • Stomach pain
  • Paleness
  • Headache
  • Elevated heart rate
  • Tongue pain
  • Fragile fingernails
  • Humming in the ears
What does the PVK+T test measure?

The basic blood count is a very common test that is used for screening, diagnosing, and monitoring various conditions. Chronic diseases (kidney failure, rheumatic diseases, chronic infections) involve anaemia. A basic blood count is a narrower test than a complete blood count (B-TVK). A complete blood count includes itemisation of white blood cells.

The number of white blood cells (Leuk) is the actual number of white blood cells in proportion to the blood volume. Either a decrease or an increase may be significant. There are five types of white blood cells, which carry out separate tasks in protecting the body against infection: neutrophils (Neut), lymphocytes (Lymf), monocytes (Mono), eosinophils (Eos), and basophils (Baso).

The number of red blood cells (Eryt) is the actual number of red blood cells in proportion to the blood volume. Either a decrease or an increase may be indicative of an abnormal condition.

Haemoglobin (Hb) measures the amount of the oxygen-delivering protein in the blood.

Haematocrit (HKR) measures the relative share of red blood cells of blood volume.

Mean corpuscular volume (MCV) measures the average size of the red blood cells.

Mean corpuscular haemoglobin (MCH) measures the amount of oxygen-delivering haemoglobin

in the red blood cells. Large red blood cells tend to have a higher MCH level, in other words, the average amount of haemoglobin.

Mean corpuscular haemoglobin concentration (MCHC) measures the concentration of haemoglobin in the blood cells. Increased MCHC levels (hyperchromia) are detected in circumstances in which the haemoglobin is abnormally concentrated inside the red blood cells.

Thrombocytes (Tromb) measures the number of platelets in the blood. Either a decrease or an increase may be indicative of bleeding or bone marrow disorders.

White blood cells (Leuk)

  • Bacterial or viral infection
  • Autoimmune diseases
  • Cancer affects the production of cells in the bone marrow
  • Acute leukaemia (a malignant disorder in which the production of white blood cells increases abnormally)
  • Malignant blood disease disrupting the production of white blood cells (myeloproliferative disorder)

Red blood cells (Eryt)

  • Dehydration
  • Burn

The MCV is elevated when the red blood cells are abnormally large (macrocytic)

Thrombocytes (Tromb)

  • Bleeding
  • Inflammation
  • Infections
  • Post-surgery
  • Bone marrow disorders
  • Spleen insufficiency

White blood cells (Leuk)

  • Some medicinal products
  • Autoimmune diseases
  • Bone marrow insufficiency
  • Some vitamin and mineral deficiencies may cause anaemia
  • Viral infection
  • Enlarged spleen
  • Acute leukaemia
  • Red blood cells (Eryt)


The MCV is decreased when the red blood cells are abnormally small (microcytic)

  • Iron deficiency anaemia
  • Long-term inflammation
  • Blood disease or thalassemia


  • Iron deficiency
  • Inflammation
  • Thalassemia

Reduced MCHC values (hypochromia) are detected in connection with:

  • Iron deficiency anaemia
  • Long-term inflammation
  • Thalassemia

Thrombocytes (Tromb)

  • Vitamin deficiency
  • Some medicinal products (for chemotherapy)
  • Excessive use of alcohol
  • Liver diseases
  • Enlarged spleen
  • Bone marrow disorder
  • Viral infection
  • Autoimmune diseases
  • Megaloblastic anaemia (large red blood cells)
  • Blood diseases
  • Transferrin receptor, soluble, carries iron into cells and tissues (1949 S -TfR)
  • Ferritin indicates the status of the iron reserves of the body (1395 S-Ferrit)
  • All cells in the body need iron (2566 fS-Fe)

SYNLAB test list: Blood count and leucocyte differential count (2474 B -PVK+T, 3696 B -TVK, 2225 B-Diffi)https://www2.synlab.fi/laboratoriokasikirja/tutkimuskuvaukset/verenkuva-leukosyyttien/

Terveyskirjasto health library: Perusverenkuva (B-PVK) https://www.terveyskirjasto.fi/terveyskirjasto/tk.koti?p_artikkeli=snk03030&p_hakusana=pvk

LabTest online: Full Blood Count (FBC) https://labtestsonline.org.uk/tests/full-blood-count-fbc


Fasting is not required

This examination does not require fasting