Fig. 8

Plasma cholesterol is not correlated with red cell membrane cholesterol. a Fluorometric cholesterol standard curve. b Red cell membranes from patients with low, elevated and highly elevated total plasma cholesterol were extracted and dried before being quantified using the Cholesterol Quantitation kit (Sigma). c Inter-group comparison of cholesterol membrane measurements revealed no significant differences between the low, medium and high plasma/total cholesterol groups, solid line represents the mean. The correlation between membrane cholesterol and total plasma cholesterol is shown in d along with the Pearson correlation coefficient (r), p value and a linear regression line modelling the correlation with 95% confidence intervals (CI). The correlation is not significant (p > 0.05). P values comparing membrane cholesterol between patient samples were calculated using the Student’s t test. RFU Relative fluorescence units