2 Lab values
Blood
Blood-count and hematology markers include cell counts and indices such as hemoglobin, hematocrit, MCV, MCH and RDW. Explore measurement context and the limits of interpreting isolated abnormalities.
Available lab values (2)
- Activated Partial Thromboplastin Time (aPTT)aPTT measures clotting time through the intrinsic and common coagulation pathways. A prolonged result has several possible causes; a shortened result often reflects elevated factor VIII or pre-analytical effects and is not a stand-alone thrombophilia test.
- INR (International Normalized Ratio)INR standardizes prothrombin-time results across laboratories. A value near 1 is typical without vitamin K antagonist therapy, while anticoagulated patients may have a deliberately higher prescribed target range.
A lab category organizes tests — it does not define disease relevance
Grouping markers by organ system or laboratory topic helps navigation. The category itself says nothing about whether a particular illness is relevant to an individual result.
What this category can do
Blood · 2 lab values
Blood-count and hematology markers include cell counts and indices such as hemoglobin, hematocrit, MCV, MCH and RDW. Explore measurement context and the limits of interpreting isolated abnormalities.
Lab markers
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Use related information without turning the category into a diagnosis
A category page only organizes laboratory information. Symptoms, function, and illness-specific questions should be documented or explored separately rather than inferred from the category.
Lab markers
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Frequently asked questions
What is a complete blood count?
A complete blood count (CBC) measures red blood cells, white blood cells, platelets, hemoglobin and related indices. A differential adds the distribution of different white-blood-cell types.
Which blood-count values are commonly reviewed?
Common values include hemoglobin, red blood cells, hematocrit, MCV, MCH, RDW, white blood cells and platelets. Which values matter most depends on the clinical question.
What does an abnormal blood count mean?
Abnormal results can have many causes, including iron deficiency, inflammation, infection or changes in blood-cell production. Individual values should be interpreted with symptoms and other findings.