HLB test / Dried layer test

What a drop of blood can tell…

The HLB coagulation test is a qualitative assessment of the blood with a microscope. It complements the quantitative conventional medical blood count, which is a tabulation of blood components. The blood data obtained should be compared with parameters from the population mean and its enormous spans, since a comparison with the user’s ideal state, however, is only visually, not statistically possible. Until one stands out from this population average, may be well advanced a pathological condition.

The HLB coagulation test is simple to perform and has also certain advantages over other types of diagnostics. A drop of blood is taken from the fingertip and has dried before being assessed. The test is practical, quick to perform and easy to learn. All you need is a bright-field microscope with low resolution, which is to get inexpensive (about 180€ to 600€).

An important advantage of HLB coagulation test or Dried Layer test is to recognize metabolic disorders very early by the quality of blood coagulation long before normal laboratory parameters in blood are striking, i.e. of the liver. In contrast to a conventional medical laboratory diagnosis the HLB test allows a completely different insight into the blood. Because what the therapist can see in the microscope, is all about the quality of the blood and the degree of deterioration.

Photo 1 shows a drop of clotted blood at 10x magnification. The photo shows a consistent picture of erythrocytes clusters, which are connected by dark fibrin. From this image the normal variety of blood images can now be observed.

At a high oxidative stress the fibrin bright holes appears. These holes may vary in size, color and form and involve a number of denatured erythrocytes, Sialin acid structures, coagulation proteins, crystals and other substances that reveal the metabolic disturbances of the organism.

Photo 2 shows a dried drop of blood at 10x magnification with high oxidative stress. If such a condition lasts long, chronic diseases are the result.

Origin of the name of the HLB coagulation test

Many bring the abbreviation HLB with Heitan – LaGarde – Bolen (Dr. Heinz Heitan, Dr. Philippe de LaGarde, Dr. Leonard H. Bolen) in combination. Also known as Dried Layer blood test, HLB test, Bolen Heitan test or simply named after R. Bradford as Bradford test it can be found in the literature. The abbreviation HLB was, however, initially for the first letter of the American surgeon, Dr. med . H. Leonard Bolen, who had developed this special blood exam end of the 1930s to the 1950s experimentally.
The test was conducted in 1939 by Dr. med. Emanuel Goldberger, MD, Kings County Hospital in Brooklyn, NY, designed for quick and easy determination of the erythrocyte sedimentation rate. The erythrocyte sedimentation rate is dependent on the composition of the blood fluid that changes in all inflammatory diseases. The HLB test is one of the easiest, fastest and relatively safe examination method that can perform a therapist with the blood for diagnosis, prognosis or prevention.

Literature tip: What a drop of blood can tell…

Ein Tropfen Blut reicht aus, um zahlreiche Störungen im Organismus feststellen zu können. Viele Therapeuten wünschen sich ein einfaches Verfahren, um Blut kostengünstig und dennoch individuell zu beurteilen. Der Heitan-Lagarde-Bradford-Test (HLB-Test) ist hierfür die geeignete Lösung. Der HLB-Gerinnungstest ergänzt das quantitative, schulmedizinische Blutbild durch qualitative Aussagen über den individuellen Zustand des Patienten.
A drop of blood is sufficient to discover numerous defects in the organism. Many therapists want a simple method to assess blood inexpensive and individually per patient. The Heitan – Lagarde Bradford (HLB) test for this is the appropriate solution. The HLB coagulation test complements the quantitative, school medical blood by qualitative statements about the individual condition of the patient.

Book recommendations for training


  • Bauer J. and Rinne J. „What a drop of blood can tell…“, Seh-Sam Verlag
  • Windstosser K. Krebsgeschehen Rilling 1975 Heft 3
  • HLB test at HPF laboratorium