An example blood cell lysis composition includes a buffer and a secondary alcohol ethoxylate at a concentration in the range of about 2.5 percent (%) to about 20% weight per volume (w/v). The secondary alcohol ethoxylate may include Tergitol™ TMN-100X or Tergitol™ 15-S-9. The composition may be configured to lyse at least 90% of blood cells in a blood sample.

It is possible that an analyzer may be operated such that it may perform tests to identify the presence or absence of a specified condition. Such tests may be performed using behaviors which are specific to the specified condition, and the results of those tests may be presented in a single output.

It is possible that an analyzer may be operated such that it may perform tests to identify the presence or absence of a specified condition. Such tests may be performed using behaviors which are specific to the specified condition, and the results of those tests may be presented in a single output.

This disclosure provides methods and kits for lysing red blood cells from whole blood.

This disclosure provides methods and kits for lysing red blood cells from whole blood.

For analyzing a sample containing particles of at least two categories, such as a sample containing blood cells, a particle counter subject to a detection limit is coupled with an analyzer capable of discerning particle number ratios, such as a visual analyzer, and a processor. A first category of particles can be present beyond detection range limits while a second category of particles is present within respective detection range limits. The concentration of the second category of particles is determined by the particle counter. A ratio of counts of the first category to the second category is determined on the analyzer. The concentration of particles in the first category is calculated on the processor based on the ratio and the count or concentration of particles in the second category.

For analyzing a sample containing particles of at least two categories, such as a sample containing blood cells, a particle counter subject to a detection limit is coupled with an analyzer capable of discerning particle number ratios, such as a visual analyzer, and a processor. A first category of particles can be present beyond detection range limits while a second category of particles is present within respective detection range limits. The concentration of the second category of particles is determined by the particle counter. A ratio of counts of the first category to the second category is determined on the analyzer. The concentration of particles in the first category is calculated on the processor based on the ratio and the count or concentration of particles in the second category.

Disclosed herein are compositions and methods for increasing visual acuity in patients in need thereof and for treating vascular disorders of the eye.

Environmentally-friendly, aqueous concentrated reagent compositions are provided for dilution and use in suitable hematology analyzers for analyzing blood cells including for enumeration and sizing of blood cells, determination of hemoglobin parameters and differentiation of leukocyte subpopulations in a single blood cell sample.

Disclosed are methods, materials and devices for approximation of blood volume in a fluid, and/or blood loss from fluid collected during a surgical procedure. Methods of detecting blood in a sample, such as a fluid sample, and kits for performing the methods, are also provided. Methods for approximating a volume of blood in a fluid using a computer are also provided. The method may be performed using a computer device having a graphical user interface (GUI), a processor configured to receive information input by a user at the user interface (type of canister, red blood cell packing ratio of the canister, subject specific identifying information, blood hematocrit (Hct), etc.), and a means for the computing device to transmit to the user interface via an electronic network, a value of a volume of blood in a fluid and/or an approximate volume measure of blood loss. The processor determines a volume of blood in a fluid, and transmits the determined volume measure of blood to the user.