P. L. Walker

Wrong biochemistry results: two case reports and observational study in 5310 patients on potentially misleading thyroid-stimulating hormone and gonadotropin immunoassay results.

Julian H Barth, A. Ismail, P. L. Walker, 2002, Clinical chemistry.

Diagnostic Value of Serum Testosterone Measurement in Infancy: Two Case Reports

R. Macfaul, A. Ismail, P. L. Walker, 1989, Annals of clinical biochemistry.

Comparison of the radioisotope dilution-coated charcoal method and a microbiological method (L. leichmannii) for measuring vitamin B12 in serum

P. L. Walker, P. Barkhan, J. L. Raven, 1966, Journal of clinical pathology.

Improved method for measuring vitamin B12 in serum using intrinsic factor, 57CoB12, and coated charcoal

P. L. Walker, P. Barkhan, J. L. Raven, 1969, Journal of clinical pathology.

The effect of cyanide, serum and other factors on the assay of vitamin B12 by a radio-isotope method using 57CoB12, intrinsic factor and coated charcoal.

P. L. Walker, P. Barkhan, J. L. Raven, 1968, Guy's Hospital reports.

ACUTE CHANGES IN SERUM THYROTROPHIN IN TREATED ADDISON'S DISEASE

A. Ismail, P. L. Walker, W. Burr, 1989, Clinical endocrinology.

Elevated plasma adrenocorticotropin (ACTH) with adrenal hyperplasia: a new factor in ACTH regulation?

N. Taylor, A. Ismail, P. L. Walker, 1991, The Journal of clinical endocrinology and metabolism.

Interference in immunoassay is an underestimated problem

J. Barth, A. Ismail, P. L. Walker, 2002, Annals of clinical biochemistry.

Comparison of the radioisotope dilution-coated charcoal method and a microbiological method (L. leichmannii) for measuring vitamin B12 in serum

P. L. Walker, P. Barkhan, J. L. Raven, 1966, Journal of clinical pathology.