Table 2.

Red cell cation content

	Na, mmol/l cells	K, mmol/l cells	Na + K, mmol/l cells	Na, mmol/kg Hb	K, mmol/kg Hb	Na + K, mmol/kg Hb
Fresh red blood cells
Patient 1	87.7	35.1	122.8	373	149	522
Mother	8.2	98.0	106.2	26.4	317	343
Father	6.1	87.5	93.6	19.4	279	298
O/N 4°C (EDTA)
Patient 1	94.6	38.9	133	402	165	567
Mother	9.1	90.0	99.1	29	291	320
Father	7.3	74.4	81.7	23	237	260
Patient 2	82.5 ± 3.5	50.5 ± 2	133 ± 2.7	313 ± 18	192 ± 11	505 ± 15
Control	10.3 ± 0.3	97.9 ± 3	108 ± 1.7	28.1 ± 3.0	314 ± 4	342 ± 3.5
Patient 4
Pre-Splx*	61.0	54.8	115.8
Post-Splx*	73.0	37.0	110.0
Post-Splx†	74‡	67‡	141‡

Patient 1 values are means from single triplicate determinations. Patient 2 values are means ± SE for 6 determinations. Patient 2 “control” is from an unrelated volunteer donor without known erythrocyte pathology. Data are unavailable for patient 3. Data for patient 4 are taken from Ref. 42 (*) and Ref. 33 (†).

^‡Units of mEq/10¹³ cells.

O/N, overnight; Splx, splenectomy.