Based in Glenview, IL, International Society for Laboratory Hematology operates as a Public Charity. The organization reported $518K in revenue, $768K in expenses, $1.4M in total assets for fiscal year 2025.
The International Society for Laboratory Hematology (ISLH) is an international group of laboratory hematology professionals serving as a forum for the dissemination of new ideas and information in all of the disciplines within laboratory hematology. These include:Cellular AnalysisHemostasis and ThrombosisFlow CytometryMolecular DiagnosticsHemoglobinopathies and ThalassemiaHemolytic AnemiasPoint of Care TestingHematology InformaticsStandards and Guidelines
How International Society for Laboratory Hematology divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.
No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Officer compensation and complete director data available with membership.
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $518K | $768K | $1.4M |
| 2024 | $886K | $749K | $1.5M |
| 2023 | $532K | $696K | $1.4M |
| 2022 | $996K | $742K | $1.5M |
| 2021 | $396K | $267K | $1.5M |
Between 2021 and 2025, reported annual revenue grew from $396K to $518K (+31%), with total assets most recently reported at $1.4M.
Interactive year-over-year charts and full filing details available with membership.
