Labs! Flashcards
Alanine aminotransferase (ALT)
normal: 1-45 IU/L
used for liver function-more specific to liver than AST
Ammonia
normal: 15-45 mcg/dL
used for liver function
Amylase
10-130 IU/L
used to determine pancreas involvement
Aspartate aminotransferase (AST)
7-42 IU/L
parallels changes in ALT in liver disease
Bicarbonate
23-29 mmol/L
Bilirubin
total: .3-1 mg/dL
direct:
Baby bilirubin
critical if it gets > 15-20 mg/dL in term infants
Blood Urea Nitrogen (BUN)
5-20 less useful measure of GFR than creatinine because BUN is also related to protein metabolism.
C-Reactive protein (CRP)
Ammonia
normal: 15-45 mcg/dL
used for liver function
Amylase
10-130 IU/L
used to determine pancreas involvement
Aspartate aminotransferase (AST)
7-42 IU/L
parallels changes in ALT in liver disease
Cortrosyn stimulation test, 1-hour
used to diagnose adrenal insufficiency. cortrosyn is given IM and blood collected one hour later. normal response: serum cortisol increase >20 mcg/dL 60 min after cortrosyn given
Bilirubin
total: .3-1 mg/dL
direct:
Baby bilirubin
critical if it gets > 15-20 mg/dL in term infants
Blood Urea Nitrogen (BUN)
5-20 less useful measure of GFR than creatinine because BUN is also related to protein metabolism.
BUN/CR ratio
mean is 10 but can range from 6-20.
C-Reactive protein (CRP)
Metabolic Syndrome
waist circumference: M: >40 in (102 cm) W: >35 in (88 cm)
TG >/= 150 mg/dL
HDL: M: /= 130/85
Fasting Glucose: >/= 110 mg/dL
Cholesterol
LDL: 50-190 normal
TG:
Serum chloride
97-107 mEq/L
Serum cortisol
8: 00 a.m.-5-23 mg/dL
4: 00 p.m.-3-15
Cortrosyn stimulation test, 1-hour
used to diagnose adrenal insufficiency. cortrosyn is given IM and blood collected one hour later. normal response: serum cortisol increase >20 mcg/dL 60 min after cortrosyn given
creatine kinase (CK)
25-145mU/mL
used in suspected MI or muscle disease. Heart, skeletal muscle, and brain have high levels
serum creatinine (SCr)
M:
D-Dimer
glucose
fasting: 200 is abnormal
Monospot
used for mono suspicion normal is negative
myoglobin
30-90 is normal. elevated 6-12 hr after acute MI
BNP-natriuretic peptide, Btype
serum postassium
3.5-5
Semen analysis
volume: 2-5 mL Sperm count: >20-40x10^6/mL Motility: >60% Forward migration Morphology: >60% collect after 48-72 hours abstinence, analyze in 1-2 hr
Serum Sodium
136-145 mmol/L
Sweat chloride
5-40 meq/L. Increased in CF
TSH-Thyroid Stimulating Hormone
.4-4.8
increased in hypothyroidism and decreased in hyperthyroid
Free thyroxine (FT4)
.8-1.7
increased in hyperthyroid
Troponin
Red Blood Cell count
Male: 4.73-5.49 x 10^6/uL
Female: 4.15-4.87 x 10^6/uL
Mean Cellular Volume (MCV)
78-98 um^3
useful in classifying type of anemia
Hemoglobin (Hgb)
Male: 14.40-16.60 gm/deciliter
Female: 12.2-14.7 gm/deciliter
Hematocrit
Men: 40-54%
Female: 37-47%
White blood cells
4,500 - 11,000 x cells/mm^3
Vitamin B12
200-800 pg/mL
Prothrombin Time (PT)
11.5-13.5 seconds
measure of the extrinsic pathway of coagulation
Partial Thromboplastin time (aPTT)
27-38 seconds
measures intrinsic coagulation pathway
Reticulocyte Count
0.5-1.5%
Albumin
3.5-5.5 g/dL
Erythropoietin
4.0-18.5 mlU/mL
Serum Folic Acid
2.5-20 ng/mL
Glucose (2 hour postprandial)
Hemoglobin A1C
4.7-8.5%
Iron
60-160 ug/dL
Blood pH
7.38-7.44
Vitamin B12
200-800 pg/mL
uric acid
M: 3.4-8 W: 2.4-6
increase associated with increased catabolism, nucleoprotein synthesis, or decreased renal clearing of uric acid (Thiazide diuretics, renal failure)
Ferritin
Male: 12-300 ng/mL
Female: 12-150 ng/mL
