Blood test explanation - Other enzymes and proteins - Other electrolytes and metabolites

Other enzymes and proteins

Test	Lower limit	Upper limit	Unit	Comments
Lactate dehydrogenase (LDH)	50[15]	150[15]	U/L
	0.4[45]	1.7[45]	μmol/L
	1.8[3]	3.4[3]	µkat/L	< 70 years old[3]
Amylase	25,[6] 30,[7] 53[15]	110,[7] 120,[146] 123,[15] 125,[6] 190[45]	U/L
	0.15[3]	1.1[3]	µkat/L
	200[139]	240[139]	nmol/L
D-dimer	n/a	500[147]	ng/mL	Higher in pregnant women[148]
		0.5[3]	mg/L
Lipase	7,[7] 10,[15] 23[45]	60,[7] 150,[15] 208[45]	U/L
Angiotensin-converting enzyme (ACE)	23[45]	57[45]	U/L
Acid phosphatase		3.0[45]	ng/mL
Eosinophil cationic protein (ECP)	2.3[3]	16[3]	µg/L

Other electrolytes and metabolites

Electrolytes and Metabolites: For iron and copper, some related proteins are also included.

Test	Patient type	Lower limit	Upper limit	Unit	Comments
Osmolality		275,[6] 280,[15] 281[3]	295,[6] 296,[15] 297[3]	mOsm/kg	Plasma weight excludes solutes
Osmolarity		Slightly less than osmolality		mOsm/l	Plasma volume includes solutes
Urea		1.2,[6] 3.0[149]	3.0,[6] 7.0[149]	mmol/L	BUN - blood urea nitrogen
		7[6]	18,[6] 21[7]	mg/dL
* Uric acid[7]		0.18[6]	0.48[6]	mmol/L
	Female	2.0[15]	7.0[15]	mg/dL
	Male	2.1[15]	8.5[15]	mg/dL
Creatinine	male	60,[3] 68[150]	90,[3] 118[150]	μmol/L	May be complemented with creatinine clearance
		0.7,[151] 0.8[151]	1.0,[151] 1.3[151]	mg/dL
	female	50,[3] 68[150]	90,[3] 98[150]	μmol/L
		0.6,[151] 0.8[151]	1.0,[151] 1.1[151]	mg/dL
BUN/Creatinine Ratio		5[15]	35[15]	-
Plasma glucose (fasting)		3.8,[6] 4.0[3]	6.0,[3] 6.1[152]	mmol/L	See also glycosylated hemoglobin (in hematology)
		65,[7] 70,[6] 72[153]	100,[152] 110[15]	mg/dL
Full blood glucose (fasting)		3.3[3]	5.6[3]	mmol/L
		60[153]	100[153]	mg/dL
Lactate (Venous)		4.5[15]	19.8[15]	mg/dL
		0.5[154]	2.2[154]	mmol/L
Lactate (Arterial)		4.5[15]	14.4[15]	mg/dL
		0.5[154]	1.6[154]	mmol/L
Pyruvate		300[15]	900[15]	μg/dL
		34[155]	102[155]	μmol/L