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OB, or Biernacki's reaction, is one of the indicators of the he alth of the body. It is measured in a blood test in preventive examinations. Elevated ESR most often indicates the presence of inflammation, but not only. Find out what OB standards are for adults, pregnant women, and children. How to interpret the OB result?

OB ,Biernacki's reaction , is the rate of decline of red blood cells over time.OB blood testis routinely tested at every screening test.The OB normdepends on age and gender. It is lowest in newborns (2 mm per hour), and highest in women over 60 - even 30 mm per hour. Everyone should check their ESR once a year with a blood test, becauseelevated ESRmay signal an illness.

OB standards

The indicatorOBis also known in English as ESR - erythrocyte sedimentation rate and we can find such a designation in the results of blood tests from some analytical laboratories. NormsOBin blood test:

  • Newborns: 0 - 2mm per hour
  • Infants (6 months and over): 12 - 17 mm per hour
  • Women under 50: 6 - 11 mm per hour
  • Women over 50: up to 30 mm per hour
  • Men under 50: 3 - 8 mm per hour
  • Men over 50: up to 20 mm per hour
  • OB study
  • CRP test - what is it and when is CRP performed? Interpretation of the CRP result

As evidenced by the increased OB?

OB indicatorabove normal is physiological in pregnancy and puerperium (up to 6 weeks after delivery). Increased ESR may also occur in women just before and during menstruation, and under the influence of hormonal contraceptives. Then it shouldn't be alarming. In other cases, elevated ESR by blood tests requires further investigation. ElevatedOBmay be evidence of:

  • inflammation (infectious and non-infectious). However, the OB indicator does not say anything about the causes or the location of the inflammation - this requires diagnostics;
  • blood proliferative diseases, e.g. leukemia;
  • on tumors;
  • hypothyroidism or hyperthyroidism;
  • hypercholesterolemia (elevated cholesterol);
  • heart attack;
  • injuries (wounds, bone fractures);
  • autoimmune diseases.

Blood test - as evidenced by decreased ESR

This condition is uncommon, but there are conditions that manifest as decreased ESR. These include:

  • hyperaemia or polycythemia - a disease involving an increase in the amount of red blood cells above the norm, as well as an increase in white cells and platelets;
  • chronic circulatory failure;
  • allergic diseases;
  • hypofibrinemia (lowering the level of fibrinogen - a plasma protein involved in the coagulation process);
  • jaundice.

Blood tests - ESR or CRP

CRP, i.e. the level of C-reactive protein (C-Reactive Protein), is the second marker of inflammation, next to OB. CRP is one of the proteins involved in the body's immune response. CRP levels rise faster with developing infection or inflammation than ESR levels, and decline more rapidly as infection or inflammation resolves. Therefore, today, in addition to determining the ESR index, the CRP level is measured during blood tests. In inflammation, it is a much more precise indicator than ESR.

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