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Publications by Petter Urdal

101 publications found

Original articles

Grimholt RM, Vestli A, Urdal P, Bechensteen AG, Fjeld B, Dalhus B, Klingenberg O (2018)
Hb Oslo [β42(CD1)Phe→Ile; HBB: c.127T>A]: A Novel Unstable Hemoglobin Variant Found in a Norwegian Patient
Hemoglobin, 42 (2), 78-83
DOI 10.1080/03630269.2018.1468773, PubMed 30032685

Amundsen EK, Urdal P, Holthe MR, Henriksson CE (2015)
Aggregation of monocytes and platelets interferes in measurement of monocyte viability with phosphatidylserine expression but not with Mitochondrial membrane potential in whole blood
Cytometry B Clin Cytom, 92 (3), 228-235
DOI 10.1002/cyto.b.21189, PubMed 26184355

Sudmann-Day ÅA, Piehler A, Klingenberg O, Urdal P (2015)
Six-day stability of erythrocyte and reticulocyte parameters in-vitro: a comparison of blood samples from healthy, iron-deficient, and thalassemic individuals
Scand J Clin Lab Invest, 75 (3), 247-53
DOI 10.3109/00365513.2014.1000370, PubMed 25608597

Amundsen EK, Urdal P, Holthe MR, Henriksson CE (2014)
Aggregation of monocytes and platelets interferes in measurement of monocyte viability with phosphatidylserine expression but not with mitochondrial membrane potential in whole blood
Cytometry B Clin Cytom (in press)
DOI 10.1002/cytob.21189, PubMed 25178677

Urdal P, Amundsen EK, Toska K, Klingenberg O (2014)
Automated alarm to detect antigen excess in serum free immunoglobulin light chain kappa and lambda assays
Scand J Clin Lab Invest, 74 (7), 575-81
DOI 10.3109/00365513.2014.915426, PubMed 25007050

Kringen MK, Piehler AP, Grimholt RM, Opdal MS, Haug KB, Urdal P (2014)
Serum bilirubin concentration in healthy adult North-Europeans is strictly controlled by the UGT1A1 TA-repeat variants
PLoS One, 9 (2), e90248
DOI 10.1371/journal.pone.0090248, PubMed 24587300

Grimholt RM, Urdal P, Klingenberg O, Piehler AP (2014)
Rapid and reliable detection of α-globin copy number variations by quantitative real-time PCR
BMC Hematol, 14 (1), 4
DOI 10.1186/2052-1839-14-4, PubMed 24456650

Grimholt RM, Sudmann ÅA, Piehler AP, Urdal P, Klingenberg O (2013)
Hb Ullevaal [β78(EF2)Leu→Val; HBB: c.235C>G], a new hemoglobin variant interfering with Hb A1c measurement using a cation exchange high performance liquid chromatography method
Hemoglobin, 38 (2), 130-2
DOI 10.3109/03630269.2013.858640, PubMed 24274186

Sudmann ÅA, Piehler A, Urdal P (2012)
Reticulocyte hemoglobin equivalent to detect thalassemia and thalassemic hemoglobin variants
Int J Lab Hematol, 34 (6), 605-13
DOI 10.1111/j.1751-553X.2012.01442.x, PubMed 22765164

Amundsen EK, Urdal P, Hagve TA, Holthe MR, Henriksson CE (2012)
Absolute neutrophil counts from automated hematology instruments are accurate and precise even at very low levels
Am J Clin Pathol, 137 (6), 862-9
DOI 10.1309/AJCPOJN03GOXZRZY, PubMed 22586044

Amundsen EK, Henriksson CE, Holthe MR, Urdal P (2012)
Is the blood basophil count sufficiently precise, accurate, and specific?: three automated hematology instruments and flow cytometry compared
Am J Clin Pathol, 137 (1), 86-92
DOI 10.1309/AJCP19BFTHYTMORO, PubMed 22180481

Piehler AP, Gulbrandsen N, Kierulf P, Urdal P (2008)
Quantitation of serum free light chains in combination with protein electrophoresis and clinical information for diagnosing multiple myeloma in a general hospital population
Clin Chem, 54 (11), 1823-30
DOI 10.1373/clinchem.2008.106153, PubMed 18801937

Rokling-Andersen MH, Reseland JE, Veierød MB, Anderssen SA, Jacobs DR, Urdal P, Jansson JO, Drevon CA (2007)
Effects of long-term exercise and diet intervention on plasma adipokine concentrations
Am J Clin Nutr, 86 (5), 1293-301
DOI 10.1093/ajcn/86.5.1293, PubMed 17991638

Masemola ML, Alberts M, Urdal P (2007)
Apolipoprotein E genotypes and their relation to lipid levels in a rural South African population
Scand J Public Health Suppl, 69, 60-5
DOI 10.1080/14034950701355635, PubMed 17676504

Anderssen SA, Carroll S, Urdal P, Holme I (2007)
Combined diet and exercise intervention reverses the metabolic syndrome in middle-aged males: results from the Oslo Diet and Exercise Study
Scand J Med Sci Sports, 17 (6), 687-95
DOI 10.1111/j.1600-0838.2006.00631.x, PubMed 17331082

Hovda KE, Mundal H, Urdal P, McMartin K, Jacobsen D (2007)
Extremely slow formate elimination in severe methanol poisoning: a fatal case report
Clin Toxicol (Phila), 45 (5), 516-21
DOI 10.1080/15563650701354150, PubMed 17503258

Choma SSR, Alberts M, Urdal P (2007)
Effect of traditional beer consumption on the iron status of a rural South African population
S. Afr. J. Clin. Nutr., 20 (2), 62-68

Hovda KE, Urdal P, Jacobsen D (2005)
Increased serum formate in the diagnosis of methanol poisoning
J Anal Toxicol, 29 (6), 586-8
DOI 10.1093/jat/29.6.586, PubMed 16168185

Alberts M, Urdal P, Steyn K, Stensvold I, Tverdal A, Nel JH, Steyn NP (2005)
Prevalence of cardiovascular diseases and associated risk factors in a rural black population of South Africa
Eur J Cardiovasc Prev Rehabil, 12 (4), 347-54
DOI 10.1097/01.hjr.0000174792.24188.8e, PubMed 16079642

Sharma P, Sahni NS, Tibshirani R, Skaane P, Urdal P, Berghagen H, Jensen M, Kristiansen L, Moen C, Sharma P, Zaka A, Arnes J, Sauer T, Akslen LA, Schlichting E, Børresen-Dale AL, Lönneborg A (2005)
Early detection of breast cancer based on gene-expression patterns in peripheral blood cells
Breast Cancer Res, 7 (5), R634-44
DOI 10.1186/bcr1203, PubMed 16168108

Hovda KE, Andersson KS, Urdal P, Jacobsen D (2005)
Methanol and formate kinetics during treatment with fomepizole
Clin Toxicol (Phila), 43 (4), 221-7
PubMed 16035197

Hovda KE, Andersson KS, Urdal P, Jacobsen D (2005)
Methanol and formate kinetics during treatment with fomepizole
Clin. Toxicol., 43 (4), 221-227
DOI 10.1081/CLT-200058936

Urdal P, Bolann B, Marstein S, Rustad P, Steensland H, Asberg A (2004)
[Updated reference intervals for clinical chemical components]
Tidsskr Nor Laegeforen, 124 (11), 1515-7
PubMed 15195155

Strømme JH, Rustad P, Steensland H, Theodorsen L, Urdal P (2004)
Reference intervals for eight enzymes in blood of adult females and males measured in accordance with the International Federation of Clinical Chemistry reference system at 37 degrees C: part of the Nordic Reference Interval Project
Scand J Clin Lab Invest, 64 (4), 371-84
DOI 10.1080/00365510410002742, PubMed 15223701

Tonstad S, Urdal P (2002)
Does short-term smoking cessation reduce plasma total homocysteine concentrations?
Scand J Clin Lab Invest, 62 (4), 279-84
DOI 10.1080/003655102760145834, PubMed 12476926

Reseland JE, Anderssen SA, Solvoll K, Hjermann I, Urdal P, Holme I, Drevon CA (2001)
Effect of long-term changes in diet and exercise on plasma leptin concentrations
Am J Clin Nutr, 73 (2), 240-5
DOI 10.1093/ajcn/73.2.240, PubMed 11157319

Sandstad O, Osnes T, Urdal P, Skar V, Osnes M (2000)
Brown pigment stones in the common bile duct: reduced bilirubinate diconjugate in bile
Scand J Gastroenterol, 35 (2), 198-203
DOI 10.1080/003655200750024399, PubMed 10720120

Sandstad O, Osnes T, Skar V, Urdal P, Osnes M (2000)
Structure and composition of common bile duct stones in relation to duodenal diverticula, gastric resection, cholecystectomy and infection
Digestion, 61 (3), 181-8
DOI 10.1159/000007755, PubMed 10773723

Gomo ZA, Allain TJ, Matenga JA, Ndemere B, Wilson A, Urdal P (1999)
Urinary iodine concentrations and thyroid function in adult Zimbabweans during a period of transition in iodine status
Am J Clin Nutr, 70 (5), 888-91
DOI 10.1093/ajcn/70.5.888, PubMed 10539750

Graff-Iversen S, Stensvold I, Lund-Larsen PG, Nodarse LO, Tverdal A, Urdal P (1998)
Serum lipids in postmenopausal or perimenopausal women using estrogen alone, estrogen with levonorgestrel, or estrogen with norethisterone, compared with nonusers: results from a cross-sectional study in two Norwegian counties 1985-1988
J Clin Epidemiol, 51 (12), 1311-6
DOI 10.1016/s0895-4356(98)00123-1, PubMed 10086825

Urdal P, Anderssen SA, Holme I, Hjermann I, Mundal HH, Haaland A, Torjesen P (1998)
Monday and non-Monday concentrations of lifestyle-related blood components in the Oslo Diet and Exercise Study
J Intern Med, 244 (6), 507-13
DOI 10.1046/j.1365-2796.1998.00395.x, PubMed 9893104

Mundal HH, Hjemdahl P, Urdal P, Kierulf P, Perneby C, Berg K, Gjesdal K (1998)
Beta-thromboglobulin in urine and plasma: influence of coronary risk factors
Thromb Res, 90 (5), 229-37
DOI 10.1016/s0049-3848(98)00062-0, PubMed 9694245

Anderssen SA, Holme I, Urdal P, Hjermann I (1998)
Associations between central obesity and indexes of hemostatic, carbohydrate and lipid metabolism. Results of a 1-year intervention from the Oslo Diet and Exercise Study
Scand J Med Sci Sports, 8 (2), 109-15
DOI 10.1111/j.1600-0838.1998.tb00177.x, PubMed 9564716

Landmark K, Abdelnoor M, Urdal P, Kilhovd B, Dørum HP, Borge N, Refvem H (1998)
Use of fish oils appears to reduce infarct size as estimated from peak creatine kinase and lactate dehydrogenase activities
Cardiology, 89 (2), 94-102
DOI 10.1159/000006763, PubMed 9524009

Urdal P, Leren TP, Tonstad S, Lund PK, Ose L (1997)
Flow cytometric measurement of low density lipoprotein receptor activity validated by DNA analysis in diagnosing heterozygous familial hypercholesterolemia
Cytometry, 30 (5), 264-8
PubMed 9383100

Bernstein R, Midtbø K, Urdal P, Mørkrid L, Smith G, Muller C, Bjøro T, Haug E (1997)
Serum N-terminal pro-atrial natriuretic factor 1-98 before and during thyroxine replacement therapy in severe hypothyroidism
Thyroid, 7 (3), 415-9
DOI 10.1089/thy.1997.7.415, PubMed 9226213

Gaard M, Tretli S, Urdal P (1997)
Blood lipid and lipoprotein levels and the risk of cancer of the colon and rectum. A prospective study of 62,173 Norwegian men and women
Scand J Gastroenterol, 32 (2), 162-8
DOI 10.3109/00365529709000187, PubMed 9051877

Torjesen PA, Birkeland KI, Anderssen SA, Hjermann I, Holme I, Urdal P (1997)
Lifestyle changes may reverse development of the insulin resistance syndrome. The Oslo Diet and Exercise Study: a randomized trial
Diabetes Care, 20 (1), 26-31
DOI 10.2337/diacare.20.1.26, PubMed 9028689

Nafstad P, Kongerud J, Botten G, Urdal P, Silsand T, Pedersen BS, Jaakkola JJ (1996)
Fetal exposure to tobacco smoke products: a comparison between self-reported maternal smoking and concentrations of cotinine and thiocyanate in cord serum
Acta Obstet Gynecol Scand, 75 (10), 902-7
DOI 10.3109/00016349609055025, PubMed 9003090

Anderssen SA, Hjermann I, Urdal P, Torjesen PA, Holme I (1996)
Improved carbohydrate metabolism after physical training and dietary intervention in individuals with the "atherothrombogenic syndrome'. Oslo Diet and Exercise Study (ODES). A randomized trial
J Intern Med, 240 (4), 203-9
DOI 10.1046/j.1365-2796.1996.22848000.x, PubMed 8918511

Brunvand L, Quigstad E, Urdal P, Haug E (1996)
Vitamin D deficiency and fetal growth
Early Hum Dev, 45 (1-2), 27-33
DOI 10.1016/0378-3782(95)01719-4, PubMed 8842637

Holme I, Urdal P, Anderssen S, Hjermann I (1996)
Exercise-induced increase in lipoprotein (a)
Atherosclerosis, 122 (1), 97-104
DOI 10.1016/0021-9150(95)05761-7, PubMed 8724116

Anderssen S, Holme I, Urdal P, Hjermann I (1995)
Diet and exercise intervention have favourable effects on blood pressure in mild hypertensives: the Oslo Diet and Exercise Study (ODES)
Blood Press, 4 (6), 343-9
DOI 10.3109/08037059509077619, PubMed 8746601

Løhne K, Urdal P, Leren TP, Tonstad S, Ose L (1995)
Standardization of a flow cytometric method for measurement of low-density lipoprotein receptor activity on blood mononuclear cells
Cytometry, 20 (4), 290-5
DOI 10.1002/cyto.990200404, PubMed 7587716

Eri LM, Urdal P, Bechensteen AG (1995)
Effects of the luteinizing hormone-releasing hormone agonist leuprolide on lipoproteins, fibrinogen and plasminogen activator inhibitor in patients with benign prostatic hyperplasia
J Urol, 154 (1), 100-4
DOI 10.1016/S0022-5347(01)67239-2, PubMed 7539852

Leren TP, Rødningen OK, Tonstad S, Røsby O, Urdal P, Ose L (1995)
Identification of the apo B-3500 mutation in the Norwegian population
Scand J Clin Lab Invest, 55 (3), 217-21
DOI 10.3109/00365519509089616, PubMed 7638555

ANDERSSEN SA, HAALAND A, HJERMANN I, URDAL P, GJESDAL K, HOLME I (1995)
OSLO DIET AND EXERCISE STUDY - A ONE-YEAR RANDOMIZED INTERVENTION TRIAL - EFFECT ON HEMOSTATIC VARIABLES AND OTHER CORONARY RISK-FACTORS
Nutr. Metab. Carbiovasc. Dis., 5 (3), 189-200

Eri LM, Urdal P (1995)
Effects of the nonsteroidal antiandrogen Casodex on lipoproteins, fibrinogen and plasminogen activator inhibitor in patients with benign prostatic hyperplasia
Eur Urol, 27 (4), 274-9
DOI 10.1159/000475180, PubMed 7544732

Gaard M, Tretli S, Urdal P (1994)
Risk of breast cancer in relation to blood lipids: a prospective study of 31,209 Norwegian women
Cancer Causes Control, 5 (6), 501-9
DOI 10.1007/BF01831377, PubMed 7827236

Sandstad O, Osnes T, Skar V, Urdal P, Osnes M (1994)
Common bile duct stones are mainly brown and associated with duodenal diverticula
Gut, 35 (10), 1464-7
DOI 10.1136/gut.35.10.1464, PubMed 7959206

Birkeland KI, Hanssen KF, Urdal P, Berg K, Vaaler S (1994)
A long-term, randomized, comparative study of insulin versus sulfonylurea therapy in type 2 diabetes
J Intern Med, 236 (3), 305-13
DOI 10.1111/j.1365-2796.1994.tb00801.x, PubMed 8077888

Stensvold I, Tverdal A, Urdal P, Graff-Iversen S (1993)
Non-fasting serum triglyceride concentration and mortality from coronary heart disease and any cause in middle aged Norwegian women
BMJ, 307 (6915), 1318-22
DOI 10.1136/bmj.307.6915.1318, PubMed 8257886

Landmark K, Urdal P (1993)
Serum magnesium and potassium in acute myocardial infarction: relationship to existing beta-blockade and infarct size
Angiology, 44 (5), 347-52
DOI 10.1177/000331979304400502, PubMed 8097620

Daae LN, Kierulf P, Landaas S, Urdal P (1993)
Cardiovascular risk factors: interactive effects of lipids, coagulation and fibrinolysis
Scand J Clin Lab Invest Suppl, 215, 19-27
DOI 10.3109/00365519309090694, PubMed 8327848

Urdal P, Landmark K, Basmo GM (1992)
Mononuclear cell magnesium and retention of magnesium after intravenous loading in patients with acute myocardial infarction
Scand J Clin Lab Invest, 52 (7), 763-6
DOI 10.3109/00365519209115523, PubMed 1455169

Stensvold I, Urdal P, Thürmer H, Tverdal A, Lund-Larsen PG, Foss OP (1992)
High-density lipoprotein cholesterol and coronary, cardiovascular and all cause mortality among middle-aged Norwegian men and women
Eur Heart J, 13 (9), 1155-63
DOI 10.1093/oxfordjournals.eurheartj.a060331, PubMed 1396823

Lie B, Os I, Bisgaard MB, Jacobsen D, Urdal P (1992)
[Rhabdomyolysis in self-induced poisoning. A prospective study]
Tidsskr Nor Laegeforen, 112 (18), 2359-61
PubMed 1412237

Waage H, Silsand T, Urdal P, Langård S (1992)
Discrimination of smoking status by thiocyanate and cotinine in serum, and carbon monoxide in expired air
Int J Epidemiol, 21 (3), 488-93
DOI 10.1093/ije/21.3.488, PubMed 1634310

Skogseid IM, Nordby HK, Urdal P, Paus E, Lilleaas F (1992)
Increased serum creatine kinase BB and neuron specific enolase following head injury indicates brain damage
Acta Neurochir (Wien), 115 (3-4), 106-11
DOI 10.1007/BF01406367, PubMed 1605077

Graff-Iversen S, Holm HA, Istad H, Ose L, Rom AK, Kristiansen IS, Thelle D, Torsvik H, Urdal P, Wiik J (1991)
[Treatment of hypercholesterolemia in adults. A treatment program 1991]
Tidsskr Nor Laegeforen, 111 (28), 3407-11
PubMed 1792668

Bjartveit K, Stensvold I, Lund-Larsen PG, Gjervig T, Krüger O, Urdal P (1991)
[Cardiovascular screenings in Norwegian counties. Background and implementation. Status of risk pattern during the period 1986-90 among persons aged 40-42 years in 14 counties]
Tidsskr Nor Laegeforen, 111 (17), 2063-72
PubMed 1871734

Bjartveit K, Stensvold I, Lund-Larsen PG, Graff-Iversen S, Urdal P (1991)
[Cardiovascular screenings in Norwegian counties. Trends in risk pattern during the period 1985-90 among persons aged 40-42 in 4 counties]
Tidsskr Nor Laegeforen, 111 (17), 2072-6
PubMed 1871735

Hjortdahl P, Landaas S, Urdal P, Steinbakk M, Fuglerud P, Nygaard B (1991)
C-reactive protein: a new rapid assay for managing infectious disease in primary health care
Scand J Prim Health Care, 9 (1), 3-10
DOI 10.3109/02813439109026574, PubMed 2041926

Sundrehagen E, Urdal P, Heggli DE, Lindegaard MW, Jacobsen E (1990)
Radiolabelling of platelets with technetium-99m
Thromb Res, 57 (5), 737-45
DOI 10.1016/0049-3848(90)90031-7, PubMed 2140207

Landmark K, Urdal P (1990)
[Magnesium during diuretic therapy]
Tidsskr Nor Laegeforen, 110 (1), 59-60
PubMed 2300940

Landaas S, Urdal P, Hjortdahl P (1990)
Laboratory tests for diagnosis of infections
Scand J Clin Lab Invest Suppl, 202, 43-5
PubMed 2075444

LANDAAS S, URDAL P, HJORTDAHL P (1990)
LABORATORY TESTS FOR DIAGNOSIS OF INFECTIONS
Scand. J. Clin. Lab. Invest., 50 202, 43-45

Urdal P, Hjermann I, Lund PK, Torsvik H (1989)
[Hypercholesterolemia. Use of laboratory analysis]
Tidsskr Nor Laegeforen, 109 (4), 464-8
PubMed 2919381

Bork E, Hansen M, Urdal P, Paus E, Holst JJ, Schifter S, Fenger M, Engbaek F (1988)
Early detection of response in small cell bronchogenic carcinoma by changes in serum concentrations of creatine kinase, neuron specific enolase, calcitonin, ACTH, serotonin and gastrin releasing peptide
Eur J Cancer Clin Oncol, 24 (6), 1033-8
DOI 10.1016/0277-5379(88)90154-x, PubMed 2842159

Vaagenes P, Urdal P, Melvoll R, Valnes K (1986)
Enzyme level changes in the cerebrospinal fluid of patients with acute stroke
Arch Neurol, 43 (4), 357-62
DOI 10.1001/archneur.1986.00520040043017, PubMed 3954619

Nordby HK, Urdal P, Nesbakken R (1986)
Possible evaluation of treatment and prognosis in brain contusions by means of the isoenzyme creatine kinase (CK-BB) in the blood
Acta Neurochir Suppl (Wien), 36, 142
DOI 10.1007/978-3-7091-8859-0_38, PubMed 3467544

Urdal P, Landaas S, Kierulf P, Strømme JH (1985)
Macroamylase immunoglobulins show high affinity for animal and human amylases
Clin Chem, 31 (5), 699-702
PubMed 2580649

Nordby HK, Urdal P (1985)
Creatine kinase BB in blood as index of prognosis and effect of treatment after severe head injury
Acta Neurochir (Wien), 76 (3-4), 131-6
DOI 10.1007/BF01418475, PubMed 4025019

Nordby HK, Urdal P, Bjørnaes H (1984)
The prognosis of patients with concussion and increased creatine kinase BB in the cerebrospinal fluid
Acta Neurochir (Wien), 71 (3-4), 205-15
DOI 10.1007/BF01401315, PubMed 6741637

Urdal P, Urdal K, Strømme JH (1982)
Age-related reference intervals for creatine kinase BB in serum
Scand J Clin Lab Invest, 42 (8), 621-5
PubMed 7167729

Nordby HK, Urdal P (1982)
The diagnostic value of measuring creatine kinase BB activity in cerebrospinal fluid following acute head injury
Acta Neurochir (Wien), 65 (1-2), 93-101
DOI 10.1007/BF01405445, PubMed 7136881

Urdal P (1981)
Macro creatine kinase BB isoenzyme in serum: most likely an antigen-autoantibody complex
Scand J Clin Lab Invest, 41 (5), 499-505
DOI 10.3109/00365518109090489, PubMed 6797037

Landaas S, Urdal P, Reikvam A, Semb G (1981)
The origin of creatine kanase BB occurring in serum during aortocoronary bypass surgery
Clin Chim Acta, 111 (2-3), 179-83
DOI 10.1016/0009-8981(81)90185-6, PubMed 6971717

Urdal P, Kierulf P (1981)
Sensitive and specific radioimmunoassay for creatine kinase BB isoenzyme in serum, with use of an autoantibody
Clin Chem, 27 (1), 83-7
PubMed 7449127

Urdal P, Landaas S (1979)
Macro creatine kinase BB in serum, and some data on its prevalence
Clin Chem, 25 (3), 461-5
PubMed 262189

Review articles

Fjeld B, Sudmann-Day ÅA, Grimholt RM, Larstorp ACK, Urdal P, Klingenberg O (2022)
Additional value of red blood cell parameters in predicting uncommon α-thalassemia; experience from 10 years of α-globin gene sequencing and copy number variation analysis
Int J Lab Hematol, 45 (2), 250-259
DOI 10.1111/ijlh.14010, PubMed 36567661

Landmark K, Urdal P (1992)
[Magnesium therapy in acute myocardial infarction]
Tidsskr Nor Laegeforen, 112 (4), 495-7
PubMed 1553701

Urdal P, Stromme JH (1985)
Creatine kinase BB in cerebrospinal fluid and blood: methodology and possible clinical application
Scand J Clin Lab Invest, 45 (6), 481-7
DOI 10.3109/00365518509155247, PubMed 4070950

Other articles

Grimholt RM, Urdal P, Klingenberg O, Piehler AP (2019)
Correction to: Rapid and reliable detection of α-globin copy number variations by quantitative real-time PCR
BMC Hematol, 19, 13
DOI 10.1186/s12878-019-0144-5, PubMed 31695920

Amundsen EK, Urdal P, Henriksson CE (2015)
Poor accuracy of the eosinophil count of hematology instruments limits the use of eosinopenia as a marker of bacterial infection or increased mortality
Int J Lab Hematol, 37 (5), e119-22
DOI 10.1111/ijlh.12343, PubMed 25807967

Piehler AP, Grimholt RM, Bjerner J, Urdal P, Buchmann M (2012)
Discrepancy between HbA1c and fasting glucose results due to HbD
Scand J Clin Lab Invest, 73 (2), 186-8
DOI 10.3109/00365513.2012.744089, PubMed 23198773

Piehler AP, Urdal P (2009)
Quantitation of Serum Free Light Chains Reply
Clin. Chem., 55 (8), 1587-1588
DOI 10.1373/clinchem.2009.126821

Urdal P, Sandstad O, Løberg EM, Haug KB (2008)
[Useful genetic test for lactase deficiency]
Tidsskr Nor Laegeforen, 128 (5), 593
PubMed 18311211

Foss Haug KB, Kierulf P, Sandset PM, Urdal P, Wisløff F (1998)
[Hereditary hemochromatosis and use of genetic tests]
Tidsskr Nor Laegeforen, 118 (12), 1911
PubMed 9638063

Kristiansen IS, Rom AK, Urdal P, Wiik J (1992)
[Cholesterol treatment is not controversial?]
Tidsskr Nor Laegeforen, 112 (16), 2119-20
PubMed 1523641

Urdal P, Borch SM, Landaas S, Krutnes MB, Gogstad GO, Hjortdahl P (1992)
Rapid immunometric measurement of C-reactive protein in whole blood
Clin Chem, 38 (4), 580-4
PubMed 1568327

Urdal P, Landmark K (1989)
Measurement of magnesium in mononuclear blood cells
Clin Chem, 35 (7), 1559-60
PubMed 2758624

VAAGENES P, URDAL P (1987)
CREATINE-KINASE ACTIVITY IN CEREBROSPINAL-FLUID - REPLY
Arch. Neurol., 44 (5), 472
DOI 10.1001/archneur.1987.00520170004004

Urdal P (1984)
Enzymic assay for oxalate in unprocessed urine, as adapted for a centrifugal analyzer
Clin Chem, 30 (6), 911-3
PubMed 6723052

Urdal P, Urdal K, Strømme JH (1983)
Cytoplasmic creatine kinase isoenzymes quantitated in tissue specimens obtained at surgery
Clin Chem, 29 (2), 310-3
PubMed 6821935

Urdal P, Strømme JH (1982)
Creatine kinase BB (CK-BB) and acute myocardial infarction
Clin Chem, 28 (11), 2324-5
PubMed 7127782

Urdal P, Strømme JH (1979)
Effects of Ca, Mg, and EDTA on creatine kinase activity in cerebrospinal fluid
Clin Chem, 25 (1), 147-50
PubMed 104806

Books

Urdal P, Brun A, Åsberg A, Stakkestad JA (2009)
Brukerhåndbok i medisinsk biokjemi
Akademisk fagforl., Haugesund (4. utg.), 635 s.
BIBSYS 091740177, ISBN 82-7868-053-1

Lillesund GSB, Daae LNW, Urdal P (2006)
Laboratoriemedisinske undersøkelser ved Oslo-sykehusene: blåboka 2006
Oslo (7.utg.), 111 s.
BIBSYS 070078165

Daae LNW, Urdal P (1997)
Laboratoriemedisinske undersøkelser ved Oslo-sykehusene
Oslo ([2. utg. rev. opptr.]), 107 s.
BIBSYS 071462775

Theses

Urdal P (1983)
Creatine kinase BB isoenzyme: methods for estimation and occurrence in human tissues and body fluids
Central Laboratory, Ullevål University Hospital, Oslo, 1 b. (flere pag.)
BIBSYS 831199539