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EFFECT OF ANTICOAGULANT ON HORMONE CONCENTRATION IN SAMPLES SEPARATED AND FROZEN IMMEDIATELY (EDTA = 100%)

Colours indicate cap colour of collection tube

Hormone Heparin Serum Fluoride
ACTH -74% ~ ~
Aldosterone +17% +15% -12%
a -subunit (total) ~ ~ -13%
a -subunit (free) ~ ~ ~
AVP ~ -42% ~
BNP* ~ ~ NT
CRH ~ +46% ~
C-peptide ~ ~ ~
FSH ~ ~ ~
Glucagon ~ ~ ~
GH ~ ~ ~
IGF-1 ~ ~ ~
IGFBP-3 ~ ~ -28%
Insulin ~ ~ ~
Leptin ~ ~ ~
LH ~ ~ ~
NT-BNP* ~ ~ NT
Estradiol ~ +11% ~
PPP ~ +19% -11%
PTH ~ ~ ~
Prolactin ~ ~ ~
VIP -20% -22% ~

~ = no significant difference (p>0.05 and/or difference <10%)
NT = not tested
* n = 3

 

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