Table 1.
Evolution of hemoglobin and hematocrit level thresholds by gender, through the latest diagnostic criteria for polycythemia vera
| Diagnostic criteria, year | Hb levels cutoff (g/dL) | HCT levels cutoff (%) |
|---|---|---|
| BCSH, 1996 [28] | ||
| M | n.r. | > 60 |
| F | n.r. | > 56 |
| WHO, 2001 [29] | ||
| M | > 18.5 | n.r. |
| F | > 16.5 | n.r. |
| WHO, 2008 [30] | ||
| M | > 18.5 | > 99th percentile for age, sex |
| F | > 16.5 | Altitude of residence |
| WHO, 2016 [1] | ||
| M | > 16.5 | > 49 |
| F | > 16 | > 48 |
Hb, hemoglobin; HCT, hematocrit; M, males; F, females; BCSH, British Committee for Standards in Hematology; WHO, World Health Organization. n.r., not reported