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. Author manuscript; available in PMC: 2013 Apr 28.
Published in final edited form as: Clin Biochem. 2003 Feb;36(1):21–25. doi: 10.1016/s0009-9120(02)00405-8

Table 4.

Diurnal effects on ZPP blood concentrations males and females age 0 to 17 years

Time ZPP Geometric Means (μg/dL) (μmol/mol heme)*
0–12m 13–24m 2–5y 6–9y 10–17y All ages
Females
 06:00–11:59 29 (53.4) 26 (47.8) 22 (40.5) 20.5 (37.7) 28 (51.5) 23 (42.3)
 12:00–17:59 27 (49.7) 26 (47.8) 24 (44.2) 23 (42.3) 21 (38.6) 24 (44.2)
 18:00–23:59 30 (55.2) 27 (49.7) 27 (49.7) 25 (46.0) 22 (40.5) 27 (49.7)
Males
 06:00–11:59 25 (46.0) 25 (46.0) 23 (42.3) 20 (36.8) 20.5 (37.7) 22 (40.5)
 12:00–17:59 26 (47.8) 25 (46.0) 23 (42.3) 21 (38.6) 20 (36.8) 23 (42.3)
 18:00–23:59 26 (47.8) 27 (49.7) 26 (47.8) 23 (42.3) 24 (44.2) 26 (47.8)
*

Multiply μg/dL by 1.83 to convert to μmol/mol heme